1. At the start of the game, you'll be provided with a series of numbers and a blank space to predict the next number.
2. Try to figure out the formula used in generating the numbers and predict the next number.
This pattern is a common Fibonacci sequence so the next number would be 5 (i.e. 3+2) so you just enter 5 in the empty space.
If you get stumped on a question, try submitting three times to load a hint or move on to the next question.