Simple Number Game

This is a simple number game in which one arithmetic expression with question mark is shown with three choices (which choice should replace the question mark in the expression) would be moving from left to right and right to left/right to left and one of them would be the correct choice and you need to choose the correct choice. Other two choices would be incorrect. If you touch the incorrect choice it would change to red colour and if you touch the correct choice, score would be increased and next arithmetic expression with 3 choices would be shown and you need to proceed in the same manner. You could either touch the choice directly or the lane (from 3 lanes) to choose the choice.You could choose the category you prefer and from that arithmetic expressions would be shown.
Interesting? Give it a try now.