Keeping our brains healthy and active is important, but knowing how isn't always easy.
However, there is one method proven to boost cognitive function and brain power - solving tricky brain teasers. It's like a gym for your brain.
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While you might struggle with challenging puzzles at first, the more often you practice the better you'll become, and before long you'll be solving genius-level brain teasers. So, if you're looking for something to test your IQ, why not try your hand at this new challenge? All you have to do is find the number hidden among the rows and rows of Bs.
You might think this puzzle, created by the contact lens specialists at Lenstore, is easy - after all, it should be simple to find a number among a sea of letters since they're two very different things, right?
But the more you look at the teaser, the more confused you might find yourself, as the number you're looking for seems to blend in perfectly with the Bs. We promise it's there, you just have to look harder!
We'll give you a hint if you're struggling - the number you're looking for is toward the right-hand side of the image.
We won't tell you what number it is that you're supposed to find, but have a think about what digits might be easiest to conceal among rows of Bs. It's definitely not the number 4!
Have you got it now? According to Lenstore, you need to find the number within 36 seconds if you want to tell people you've got "eagle eyes", so if you haven't found it yet - hurry up!
We're about to give you the answer, so if you don't want to know just yet, don't scroll any further.
Did you manage to find it within the time limit?
In the mood for more puzzles? Try this quiz page where we have collected plenty more.
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