MathTrix or Math Tricks Free
1,000 - 5,000 downloadsAdd this app to your listsTweets por @Appszoom
The classic math tricks from your childhood but in new astonishing presentation. You are bound to be amazed.
Ask your friend to take or think of a number and not to tell you. Then from this app show him or her the 6 cards and just ask him/her to confirm whether the card contains the number or not. If it contains press YES and does not contain press NO. Thus finishing six cards, you can tell him/her the secret number from the final screen.