The focal point of this particular brain teaser is the number ‘7’. You need to carefully examine the image we’re about to present to you, because in a few short seconds you’re going to have to figure out which one has grown an extra limb (or a new line, as it were).
It takes a degree of visual sharpness to notice the rebellious seven hiding amongst the other sevens, but eventually you’ll be able to spot it.
Now, ready yourself, take a deep breath and peel your eyes carefully. Let us know how long it takes you to solve the puzzle in the shortest amount of time.
How did it go? Do let us know in the comments box! Did you find the wrong number 7?
Don’t hesitate to share this little optical illusion with all your friends and family on Facebook.