# Your IQ Is 151 If You Solve This Impossible Math Problem

## Only 2% of the population can solve this math problem and it's driving the internet crazy.

YOU NAILED IT

YOU NAILED IT

**Your IQ is 151 or higher.****Youâ€™re a creative thinker. You're curious and logical. You have the vigor to roll with the punches, so youâ€™re always prepared for things to change abruptly. This often calls for out-of-the-box thinking. You always persist in driving toward what you believe to be in the best interest of things, and you donâ€™t give up easily when convinced youâ€™re on the right track. Keep up the good work! We gave this test to 250 American college students and only 4 got it right. Below is the explanation.****If there are n people at a party, the first guy will have (n-1) handshakes. The second guy will have (n-2) handshakes, since the handshake with the first one has already been counted for.****Similarly, the last person has no one to shake hands with, since all handshakes by him were already counted for.****Therefore, the total number of handshakes is: n(n-1)/2****n(n-1)/2 = 66****n = 12**__THERE WEREÂ 12 PEOPLE AT THE PARTY__**.**

WRONG!

WRONG!

**The correct answer is 12.****If there are n people at a party, the first guy will have (n-1) handshakes. The second guy will have (n-2) handshakes, since the handshake with the first one has already been counted for.****Similarly, the last person has no one to shake hands with, since all handshakes by him were already counted for.****Therefore, the total number of handshakes is: n(n-1)/2****n(n-1)/2 = 66****n = 12**__THERE WEREÂ 12 PEOPLE AT THE PARTY.__