YOU have a top IQ if you can spot the number 6341 hidden in this crafty picture within ten seconds.
This mind-wrecking optical illusion has gone viral online and left most puzzlers stumped.
In the picture are roughly 176 clones of the number "6391".
However, among the group is an anomaly and it is your job to spot it.
Set your clock to ten seconds and see if you can find the number 6341.
Can you see it?
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If not, do not worry, the answer is circled in the picture below.
If that was too easy, however, why not see if you can find the delicious seedless slice of watermelon among this fruit salad.
In another cunning brain teaser, see if you can spot the hidden heart-shaped berry in less than three seconds.
This optical illusion challenges you to spot the correctly spelt word in less than ten seconds.
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If you fancy a trip to colder climates, can you spot the five key differences in these penguin cartoons?
Meanwhile, people have been left baffled trying to spot the odd one out in this picture of peppers.
While you are at it, why not try and spot the odd cow out in the herd.