Have you ever been fascinated by the magic of optical illusions and the challenge of visual puzzles? Prepare to put your neurons to the test with a riddle that will tickle your sense of observation. Here is the challenge : detect the number 9 cleverly hidden among a multitude of 7s, in a record time … Continue reading The record for finding the hidden “9” among the 147 “7” digits is 12 seconds. This reveals an unusual IQ