A simple but very challenging math game.
HOW TO PLAY:
- Tap on the green button when the number is neither multiples of 7, nor containing any digit 7.
- Otherwise, avoid tapping and do nothing.
A simple but very challenging math game.
HOW TO PLAY:
- Tap on the green button when the number is neither multiples of 7, nor containing any digit 7.
- Otherwise, avoid tapping and do nothing.