Best tbc to btc exchangeproiecte
...sportive și cazino online. Cunoștințe solide de integrare a cotelor în timp real. Familiaritate cu API-urile populare de jocuri de cazino. Capacitatea de a asigura securitatea și tranzacțiile fără probleme. Portofoliu care prezintă proiecte similare. Cerințele de bază ale proiectului: -Interfața utilizatorului -depozit și retragere utilizator (opțiune de plată personalizată de la agent) - Betfair Exchange API - Cazino și alte jocuri - Panoul de administrare - Panou Super Admin - Super Panel - Master Panel - Panoul agentului local Voi controla totul de pe panoul de administrare. Nu am API-uri de sport și cazinouri, toate API-urile trebuie să fie furnizate de pe site-ul dezvoltatorului. Dacă există costuri suplimentare, atunci voi plăti. Dacă ești pregătit pentru provocarea d...
Sunt în căutare de un editor video, de preferat din Romania, pentru realizare de filmulețe Best moment's pentru nunta. Doresc ca rezultatul final sa fie cat mai cinematic. Colorizare nu este obligatorie, o voi face eu. Aștept ofertele voastre împreună cu un portofoliu real și relevând cerințelor.
Buna ziua, Sunt in cautarea unui specialist care ma poate ajuta si invata sa rezolv urmatoarele probleme : 1. Userii sa nu poata trimite mailuri decat in anumit interval orar, orice mail trimis in afara programului stabilit sa ramana in "Asteptare" si sa se trimita automat cand ii este permis 2. Sa ma scape de spam-uri (Deja am protectie de la BitDefender) 3. Sa verifice serverul de exchange sa vada daca am totul OK , actualul IT-ist nu mai are timpul necesar . Sunt deschis la propuneri . Va multuemesc si astept oferte corecte .
...Emag direct in magazinul online, si invers. Multumesc frumos :) Hi! My online store is connected to EMAG. At one point I managed to transfer a product automatically, through the EMAG module which is installed on the site - directly in Emag. But I don't think it's connected anywhere or I don't know. Someone helped me and said that everything is set up correctly but it still doesn't work. The products are not transferred to e-mag, although we have configured them on the site as required. AND my e-mag orders don't even enter the site and the stock doesn't change automatically. So half of the work is already done. I need to transfer the products (there are a maximum of 30 products) and then exchange real-time orders and stock...
Bun cunoscător al limbii române Bun cunoscător ZOOM Abilități de actor Abilități de jurnalist online Abilități de marketing digital Abilități de bun comunicator
Bună, phpmaestro. Ți-am remarcat profilul și vreau să-ți ofer proiectul meu. Putem discuta detaliile într-o conversație privată.
Stimate domn sau doamna, suntem o companie de Hosting cu propriul data center situat in Roma. Suntem in cautare de parteneri pentru colaborare de exchange company. noi va oferim servicii la schimb de recomandare pe blogul,site-ul tau ( minim 10.000 vizite zilnice ) Contact: Europa Data Center SRL [Removed for encouraging offsite communication which is against our Terms and Conditions -Section 13:Communication With Other Users]
...care sunt cerintele, daca se poate lua green card dupa (raspunsul e da pentru H1 si H2) I Foreign information media representative - 1-2 propozitii J-1 Exchange visitor, when certain conditions are met - mai multe detalii pentru asemenea vize; informatii despre firme care angjeaza profesori din Ro prin asemena firme K-1 Fiancé of a U.S. citizen - 2-3 propozitii L-1 Intra-company transferee 1-2 propozitii M-1 Foreign vocational student - 1-2 propozitii O-1, O-2 Temporary worker in the sciences - 1-2 propozitii P-1, P-2, P-3 Temporary worker in the arts, athletics in an exchange or cultural program - 1-2 propozitii Q-1, Q-2 Cultural exchange visitor - 1-2 propozitii R-1 Temporary religious worker with a nonprofit organization - 1-2 propozitii TC Professional bu...
Vrem sa dezvoltam smart contracts intre utilizatorii sitului nostru pentru serviciile prestate sau produsele oferite intre si catre utilizatorii sitului. In baza acestora clientii vor cumpara din walleturile proprii de ETH, tokeni din site sau pot cumpara tokeni printr-un API al unui exchange direct de pe site platind cu ETH sau fiat si primind tokeni direct in walleturile din cadrul sitului.
- proiectul urmeaza sa fie facut folosind blockchain si dezvoltat pe platforma ethereum - dupa lansarea proiectului dorim sa nu se mai poata modifica codul sursa - folosim blockchain pentru ca dorim sa fie un program autonom , descentralizat si complet anonim - siteul pe care va fi implementat proiectul t... - folosim blockchain pentru ca dorim sa fie un program autonom , descentralizat si complet anonim - siteul pe care va fi implementat proiectul trebuie sa aiba anumite functionalitati si anume : * interfata de sign up / login + google authentification * transfer de cryptocurrency pentru a putea fiecare sa isi alimenteze contul de pe site cu ETH / BTC ( ETHEREUM / BITCOIN ) * withdraw ETH / BTC cu securizare two factor code ( google a...
Ne ocupam de dezvoltarea unei retele de socializare aparte, bazata pe pasiuni si interese comune. Cautam un coleg super creativ, care isi doreste sa faca parte, dintr-un proiect ambitios.
Buna. Sint simion din paris. Am nevoie de 1 persoana care sa dea niște telefoane în limba engleza. Persoanele care trebuie contactate au legătură cu 3 situri în limba engleza de bitcoin. Vreau sa știu cum obtin un offline bitcoin wallet în valoare de 1 btc utilizind situri de sha 256 online(trebuie introduse ceva cuvinte cheie ca Parolă?) si cum folosesc portofelul mobil pt a importa si exporta bitcoinul. Cu stima simion
A price comparison website, with a good script tailored to our specific needs.
salut, am nevoie de un shop simplu. custom php cu design simplu alb si negru unde sa pot sa agaug categorii , si produse pentru fiecare categorie. dupa ce clientul cumpara produsu, sa il afiseze in my order. ca plata pentru shop trebuie sa fie btc si pm din admin sa pot vedea platile facute, useri , etc ofer 1000 pentru el . mai multe info contactati-ma pe
salut .am o eroare mica la scriptul de bitcoin ..daca se rezolva pot plati maxim 10$ btc
Salut sunt mihai ! Vriau sa schimb pentru utilizatori carma user points, plugin jomsocial 3.2 1. Carma user points sa fiba disponibil pentru a vedia doar detinatorului profilului. in cifre de pilda 0.0012345 btc. ci nu cum este standart 2. Utilizatorii sa poata sa cumpere points cu bitcoin 3. Utilizatorii sa poata sa retraga banii expediind cerere administratorului in mod implicit continutul soldului daca a atins limita mai mult de 0.1 btc. Cu radio buton de introducere a datelor, Visa Mastercard, Webmoney
Salut sunt mihai ! Vriau sa schimb pentru utilizatori carma user points, plugin jomsocial 3.2 1. Carma user points sa fiba disponibil pentru a vedia doar detinatorului profilului. in cifre de pilda 0.0012345 btc. ci nu cum este standart 2. Utilizatorii sa poata sa cumpere points cu bitcoin 3. Utilizatorii sa poata sa retraga banii expediind cerere administratorului in mod implicit continutul soldului daca a atins limita mai mult de 0.1 btc. Cu radio buton de introducere a datelor, Visa Mastercard, Webmoney
Inscrierea in directoare, Link Exchange, Comunicat de presă, articol de marketing / promovare, Rss Feed Promovarea galben depunerea pagini, depunerea director local, forum de discuții, optimizarea produsului Google, Craiglist a posta, Netscape promovare etc Am nevoie de 1.000 de înregistrări de noi ---) 1000 utilizatori noi pentru site-ul meu care vinde / cumpara site-uri on-line
Inscrierea in directoare, Link Exchange, Comunicat de presă, articol de marketing / promovare, Rss Feed Promovarea galben depunerea pagini, depunerea director local, forum de discuții, optimizarea produsului Google, Craiglist a posta, Netscape promovare etc Am nevoie de 1.000 de înregistrări de noi ---) 1000 utilizatori noi pentru site-ul meu care vinde / cumpara site-uri on-line
I need a skilled freelancer to install and configure Dolibarr for our company's productive site on our intranet. Here are the specifics: IA definition: (below you can see my own) - We need the inventory management, manufacturing, service contracts and human resources management features to be properly configured. - The system must be set up for 1-10 users to access on our intranet. Customizations and integrations: - We may require custom reports or dashboards, although the specifics for these are not yet entirely defined. - There may be other custom integrations needed as the project progresses. Ideal Skills and Experience: - Proficient in Dolibarr installation and configuration - Previous experience in setting up Dolibarr for small businesses - ...
...developer to create a sophisticated software system that will help me identify profitable betting opportunities and detect positive expected value (EV) bets within the sports betting market and also arbitrage bets, live positive EV bets and live arbitrage bets on the websites specified in the attached file. The formulas for Positive EV bets can be found on the following website. The software needs to compare the odds to the odds of , obviously following the adding of the vig (pinnacle's profit margin) to the odds, in order to receive the true odds: The software needs to run as a website that only I can access, with a similar layout to that of , as seen on the picture attached. I will also need you to send me the
...looking for a skilled copyrighter to create blog articles for our website. Here I'm interested in three articles 800-1000 words each - feel free to make more engaging titles: 1. "Technologies and Frameworks Used in Online Banking Software" 2. "Benefits of building custom virtual wallet solutions into your product" - here to speak about features of virtual wallets, flexibility to convert credits in exchange for additional services, etc. 3. "Compliances and certifications that might be needed for a financial services startup" - explore main compliances for the US and European countries a fintech software startup should know about. The main goal of these articles is to educate our audience. Therefore, the con...
I'm in need of an expert to help me build and implement an automated trading bot specifically for the Binance exchange. The Bot should: - Open position at the opening of specific bar based on EMA: The rules are simple, when bar closes above/below EMA it is counted as a first bar, any other candle after the first bar which do not close again above/below EMA is counted along. When 5th candle is still above/below EMA the bot should open position at opening price of 6th candle. If any candle again closes above/below EMA, counting is restarted. - SL will always be placed at High or Low of one bar back from the candle when position was opened depending on If it is short or long; - TP will always be equal to price difference betwen Open Price and SL price multipie...
I'm seeking an experienced developer to create a web-based BTC wallet. The main functionality the wallet should have includes sending, receiving, and storing BTC securely. In special, this wallet should include a simple interface indexer for inscribing text and files on the BTC blockchain. Though I don't have any specific security features in mind yet, I expect the designer to adhere to the best practices to ensure the highest level of security. Finally, though I'm unsure currently whether this wallet will be integrated with any other platforms or services, I may need flexibility in this regard in future. Skill-wise, the ideal candidate should be proficient in: - Developing secure, web-based applications - Understand...
...Require your support in: * Data integration: Ensuring seamless data exchange between the two systems. * Workflow automation: Developing and implementing automated workflows for various business processes. - **Vendor Invoice Creation**: The vendor invoice creation process should include: * Auto-population of vendor details: Ensure vendor information is correctly filled in. Ideal Skills and Experience: - Strong background in Microsoft Dynamics 365 F&O, particularly in Financial and Supply Chain Management modules. - Proven experience in developing and implementing integration solutions using Power Platform, including data integration and workflow automation. - Familiarity with vendor invoice creation processes and best practices. Please provide relevant example...
I need a professional to provide 2600 Flash in a widely accepted cryptocurrency like BTC, ETH, or USDT for a Private Placement Program. This coin is only required to sit in a wallet for 30 - 60 days. It will not be cashed, traded, or exchanged. Key Responsibilities: - Providing 2600 Flash in a widely accepted cryptocurrency - Transferring the coins into a secure wallet and ensuring they remain untouched for 30 - 60 days Ideal Skills and Experience: - Familiarity with cryptocurrency trading - Experience in Private Placement Programs and related procedures - Trustworthiness and reliability - Strong understanding of digital wallets and their security protocols This is a straightforward task that requires someone who can deliver on time and maintain the security and in...
Description: We are looking for an experienced Java developer with knowledge of the Bookmap API to convert an existing trading strategy from Pinescript to Java and implement it on the Bookmap platform. The developer will also be responsible for setting up the Bookmap API on IntelliJ Student Version on our machine and assisting with testing the converted strategy. Scope of Work: Setup and Configuration: Assist in setting up the Bookmap API on IntelliJ Student Version on our machine. Provide guidance and support in configuring the development environment. Strategy Conversion: Convert the existing Renko Scalper strategy, currently implemented in Pinescript, to Java. Ensure the converted strategy maintains the same logic and functionality as the original Pinescript ve...
I am in need of a sk...a skilled professional to convert my science-focused thesis into a research article, intended for academic researchers. The article should be written in a language that requires basic understanding of science, making the research accessible to a broader range of academics, rather than overspecialized individuals. This certainly requires a careful balance of maintaining scientific credibility while ensuring readability. Ideal Candidate: - Previous experience in writing or translating scientific content. - Ability to adapt complex information into easily understandable text. - Familiarity with academic research formatting and writing style. End goal is to have a well-structured research article open to the academic community, pr...
...website. The website aims to serve as a platform connecting job seekers with employers, facilitating the job search and recruitment process. 2. Scope: The recruitment website will provide a user-friendly interface for job seekers and employers to register, search, and manage job postings and applications. It will include job search, resume upload, employer profile creation, job posting, application management, and communication tools. 3. Functional Requirements: 3.1 User Registration and Authentication: • Users (job seekers and employers) should be able to register on the platform. • Authentication mechanisms should be implemented to ensure secure access to user accounts. 3.2 Job Seeker Features: • Job seekers should be able to c...
I'm seeking a crypto exchange development expert to create a vibrant and secure platform for the trading, buying, and selling of cryptocurrencies. Key Requirements: - Platform must support trading, buying, and selling of cryptocurrencies. - The design should be colorful and vibrant. - Security features including two-factor authentication (2FA), cold storage of cryptocurrencies, and encrypted user data are non-negotiable. Ideal Skills and Experience: - Experience in developing crypto exchanges. - Strong UI/UX design skills. - Proficiency in implementing robust security features. - Proficient in blockchain technology. - Previous experience in developing colorful and vibrant platforms Please provide examples of your previous work on exchanges as well as any design work ...
...Authentication and Access Control: Allow administrators, teachers, students, and parents to log in with different levels of access. Student Information System (SIS): Store and manage student demographics, academic records, attendance, health information, and conduct records. Teacher/Staff Management: Manage teacher and staff profiles, attendance, timetables, and leave requests. Online Exam Module: Create and manage online exams with customizable parameters (e.g., time limits, question types). Provide tools for question creation, including multiple choice, short answer, and essay questions. Enable automated grading for objective questions and manual grading for subjective questions. Ensure security measures to prevent cheating, such as randomized question orders and bro...
I'm looking to create a versatile cryptocurrency exchange that stands out for its variety, security, and ease of use for beginners. - I would like the exchange to feature a wide range of the top 50+ cryptocurrencies, including Bitcoin, Ethereum, Ripple, and more. - The primary target audience for this exchange will be beginner investors, so the user interface should be intuitive, user-friendly, and provide ample educational resources. - Security is paramount. To ensure the safety of our users' funds, the platform should implement two-factor authentication. I am seeking a developer with experience in creating cryptocurrency exchanges, as well as a strong understanding of user experience and security protocols.
I need a System Administrator to handle both setting up a website using Aruba and maintaining the MX (mail exchange) records. Here's what I'd need assistance with specifically: - Website setup and deployment: This involves general website operation management, hardware and software updates, and ensuring seamless website functionality. - MX record configuration and maintenance: This includes all tasks in relation to managing the mail exchange records - set up, checkups, modifications, and ensuring our web-communication stays efficient and up to date. A candidate with experience in both Aruba website deployment and MX record management will be considered ideal for this job. Knowledge about server troubleshooting will be a plus.
Hello everyone, In exchange for your expertise, you can acquire equity in our company for free. We are a vodka brand, Lugiavodka.com. To reach a billion-dollar valuation, a startup needs members who are experts in their fields, creating a strong chain where SEO is a crucial link. Criteria: Expert in SEO with solid, proven experience. Ability to develop and implement effective SEO strategies. In-depth knowledge of current market trends and best practices in SEO. Analytical skills to track and improve SEO performance. Excellent communication and collaboration skills. Your Responsibilities: Analyze and optimize our website to improve search engine rankings. Develop SEO content strategies to attract and convert visitors. Work closely with our...
I'm seeking a skilled individual to aid identifying potential trading opportunities in the stock market (National Stock Exchange or Bombay Stock Exchange) through harmonic pattern analysis, specifically focusing on ABCD patterns. Key Points: - Your primary task would be to develop an interface wherein I can get to see the charts with the above pattern in the stocks included in nse or bse 500. I am looking at daily timeframe and thus EOD data will suffice. - The project is focused on the stock market, hence, knowledge of coding (I guess Python will be ideal) and understands or willing to know what is this pattern that I am looking for. I would be collaborating with the freelancer for further additions and pattern identifications for my researc...
...strategy name is BRAMMA 1. Objective - Find every stocks in US exchange (Nasdaq and NYSE) that meet the BRAMMA strategy conditions Steps to do before everything. - Please gather all the names of US stocks market in both exchange (Nasdaq and Nyse), then please manually check every stock that meet condition and extract them to excel file. - Please select the trigger that match with the tradingview ticker -Please find list of company in Nasdaq exchange here: - Please find list in NYSE exchange here: - Total share number are: 3381 (Nasdaq) + 5606 (NYSE) = 8987 2. Point to note - BRAMMA strategy conditions are pasted in the appendix A 3. Conditions to meet my objective (can be 2 ways as followed; if the stock meet
...platform should allow for group conversations. - File Sharing: Users should be able to exchange different types of files. - Voice and Video Calls: The platform should support voice and video calls. In addition to these Telegram features, I also want the platform to have typical social network features such as: - User Profiles: Users should be able to create and manage their profiles. - News Feed: There should be a news feed where users can post and view updates. - Messaging System: The platform should have a messaging system for private conversations. It's important to note that the project should be scalable, as I plan to add more features in the future. An understanding of Telegram's functionalities and the ability to...
Hey, I'm currently developing a token on Solana called Kosher Token. Once that is complete, I would like to develop an app. I would like to get a quote for developing an app with you. The app will need to run on mobile (apk) and desktop (cloud). The MVP will include two products: the Kosher Wallet and Kosher Vendor. Need a quote for each product respectively. Please see UI design attached for reference. (Desktop and mobile versions will be very similar. We do not need two completely different designs) The landing page is already done: I only need a quote for the app. Please review the documents attached and ask any relevant questions you may have. Then please send me a rough estimate and timeline. I ignore all auto bids. I only engage with meaningful and releva...
...experience in building WhatsApp Flow APIs, specifically focusing on data processing and exchange features. Key Responsibilities: - Building a WhatsApp Flow API: The primary task will be to develop a WhatsApp Flow API from the ground up. The API should be capable of processing and exchanging data effectively. - Implementing Data Processing and Exchange Features: A key requirement of this project is the ability to process and exchange data efficiently. Ideal candidates will have a track record of integrating such features into APIs. - Deploying on an On-Premises Server: The final product needs to be deployed on an on-premises server. This means the developer should have experience with, or be willing to learn, on-premises deployment proces...
As a client, my primary focus is to leverage the influence of key crypto opinion leaders (KOLs) by establishing partnerships and collaborations with them, specifically in the Nordic Region. To achieve this, I need a freelancer with excellent expertise in this area. Your main tasks will include: - Researching and compiling a list of influential crypto KOLs - Analyzing the reach and engagement of these KOLs on social media - Identifying potential opportunities for collaborations and partnerships with these KOLs - Handling the generation of leads and creation of deals for a crypto exchange Key skills and experience I'm looking for: - Proven experience in partnership development, particularly within the crypto industry - Strong research and analytical skills - Excel...
I'm looking for someone to work with me on an automated crypto trading bot. It will use Tradingview alerts, (which uses Webhook URL) to ping a script on a server, which then uses an exchange API to execute crypto trades. I will integrate the script into MySQL using php to track the amount traded and set a e.g. a sell price for the crypto just purchased after the alert... I can do that... But I need help with the integration of alerts from Tradingview and the API code to the exchange.
FEATURES THAT I NEED TO BE IMPLEMENTED: -> FIRST MILESTONE: 1- INVESTMENT ENVIRONMENT, INTERCONNECTED WITH THE MATRIX THAT CURRENTLY OPERATES IN THE COMMUNITY. 1.1 THE USER CAN ONLY MAKE A CERTAIN INVESTMENT, ACCORDING TO HIS ADVANCES IN THE MATRIX. EX: COMPLETING YOUR: 1st LEVEL IN THE MATRIX, THE SYSTEM ALLOWS THE USER TO MAKE AN INVESTMENT OF UP TO 100$ 2ND LEVEL IN THE MATRIX: THE SYSTEM ALLOWS THE USER TO MAKE AN INVESTMENT OF UP TO 200$ 3rd LEVEL IN THE MATRIX: THE SYSTEM ALLOWS THE USER TO MAKE AN INVESTMENT OF UP TO $400 4TH LEVEL IN THE MATRIX: THE SYSTEM ALLOWS THE USER TO MAKE AN INVESTMENT OF UP TO $800 5th LEVEL IN THE MATRIX: THE SYSTEM ALLOWS THE USER TO MAKE AN INVESTMENT OF UP TO $1,200 ...
...migrations. Exchange/Messaging: Provides design, implementation, migration, and high-level troubleshooting services for Microsoft Exchange and messaging systems, including Microsoft365. Windows Servers: Provides project design + implementation, and high-level troubleshooting for infrastructure, including Windows Server (2019, 2016, 2012 R2, 2012, 2008 R2, 2003) and virtualization environments on both Hyper-V and vSphere, in addition to Citrix XenApp and/or XenDesktop, and Azure Virtual Desktop. Active Directory: Provides project design + implementation and high-level troubleshooting for Active Directory, including Azure Active Directory (Intra AD), Intune, AutoPilot, Group Policy, Access/Identity Management, AADS, Federation Services, Domain Controllers, etc. fo...
...a comprehensive guide on exchanging Bitcoin to a bank account. The guide should be tailored towards: - Advanced users seeking in-depth analysis and insights. - Written in a comprehensive analysis style. The guide will need to cover the following aspects: - Step-by-step process of converting Bitcoin to a bank account. - Detailed explanation of each step and its technical nuances. - In-depth analysis of the current trends and challenges in this process. - Recommendations for the best practices and potential pitfalls to avoid. The ideal candidate for this job should have: - Profound knowledge and experience in cryptocurrency, especially Bitcoin. - Strong understanding of banking systems and processes. - Excellent writing skills with the ability to...
For my project, I need a talented blockchain developer versed in: - Smart contract development - Token creation The potential freelancer should have solid experience in programming languages such as Solidity, JavaScript...Token creation The potential freelancer should have solid experience in programming languages such as Solidity, JavaScript, and Python. This is crucial as these are our preferred languages for blockchain development. The project would require a deft handling of: - Wallet integration - Exchange integration - Payment gateway integration Therefore, prior experience and success in these aspects would be beneficial. This project demands someone with a deep understanding of ERC20 token fundamentals and the ability to deliver flawlessly on the incorporation o...
...Management - Order Exchange - Payment Processing - Order Placement - Add to Cart Functionality 2. **Integrations:** - Internal: Dialogflow Messenger, Google Analytics - External: API Management & Billing Software, ChatGPT Turbo 4, Klaviyo, HubSpot - E-commerce: WooCommerce Integration 3. **Additional Functionalities: - Personalized product recommendations based on past data and customer demographics - Email-based customer ticketing system - Live chat option forwarding #### User Interface Customization Simple 2 chat profiles with customizable bot icon & logo option This structured format helps ensure clarity and thoroughness in capturing all aspects of your ChatMate plugin development scope. Feel free ...
I'm in need of a developer with experience in building cryptocurrency wallets for both iOS and Android platforms. The wallet must support renowned cryptocurrencies like Bitcoin, Ethereum, and Tron. Skills and experience required: - Familiarit...cryptocurrencies like Bitcoin, Ethereum, and Tron. Skills and experience required: - Familiarity with wallets for the specified cryptocurrencies (Bitcoin, Ethereum, Tron) - Proven experience in application development for both iOS and Android platforms - Knowledge in integrating exchange functionality within a crypto wallet Deliverables: - A fully functional crypto wallet supporting Bitcoin, Ethereum and Tron - Thoroughly tested application for both iOS and Android platforms - Integration of built-in exchange functionality w...
For a backoffice project, a developer is needed with skills in GO, Amazon Cloud and Crypto trading/ Crypto exchange APIs. You need to have good knowledge in english and have good communication skills. Step 1 would be to understand the project and step 2 would be to make small enhancements. In case of interest i will forward you some basic information about the project. A developer, that has worked on the project so far is available to answer questions.
