Robinhood will host financial, economic and cryptocurrency-themed quiz games in its mobile app, and award participants more than $2 million in bitcoin and dogecoin. The first round of the quiz, which starts at 4:45pm (EST) today, requires participants to answer 12 multi-select questions, each limited to 10 seconds. Users who answer all the questions correctly will split the daily $1 million bitcoin prize pool equally. If no one is correct, the prize pool will be divided by the user who answers the most questions.