These mind-boggling optical illusion pictures with hidden images ... lines lies a secret number waiting to be uncovered. The challenge? You only have 5 seconds to find it! Only those with sharp ...

Scroll to second photo for the answers Although the picture ... hidden digits, totaling 19. Three of the letters in the contact's name have been replaced with threes and the letter 'I' on the ...

A brain teaser challenges readers to find a hidden number eight within ... Take a minute to look at the picture and see if you can find the number eight in less than a minute.