Put your visual skills to the ultimate test with this baffling brainteaser that is bound to leave you scratching your head.
Puzzles like this may seem like a mere distraction from our mundane morning commute, or an easy to way to entertain the kids for a couple of minutes - but they're actually a great form of mental exercise. In fact, research has suggested that regularly practicing brainteasers can improve your attention span and bolster your concentration levels.
So, if you're in the mood to give your noggin a bit of a workout, check out this deceptively difficult puzzle that only one per cent of people can crack within the strict time limit. Seriously, you'll need laser-sharp vision and a quick mind to solve this one...
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Cast your eyes over the image above. You'll spot countless rows of the same letter in a sea of green, and if you gaze too long, you might find yourself going squiffy-eyed, reports the Mirror. But it's precisely this sea of Ms you need to scrutinise to tackle this challenge – hidden amongst them is an anomaly.
You've got a mere 11 seconds to spot the rogue letter that doesn't match the Ms, and if you nail it within the time frame, you clearly have an ultra beady set of eyes. So, set a timer on your mobile and start scouring! And no, we're not giving away any clues for this one...
Feeling a little stumped? Or reckon you've cracked it? Scroll down to the bottom of the article to find the answer - or ignore the buzzing timer and spend a bit longer looking for the rogue N.
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If that brainteaser was no match for a boffin like yourself, it's now time to ramp things up a little. The brainteaser below may be 'child-friendly', but it's by no means easy.
Created by the Government Communications Headquarters (GCHQ), you'll need to have the IQ of a genius and super analytical skills to solve this one. Seriously, crack this and you'll be one step closer to becoming the next James Bond.
So, pop on your 007 thinking caps and get ready to save the world from danger by figuring out which of the following words or phrases is the odd one out. Once you're done, you can check your answer here.
- Catwoman
- Deus Ex Machina
- Parishioner
- Pyromania
- Scuba

Up for yet another mental workout? Check out our collection of tricky brainteasers, riddles, and puzzles here. Or, learn more about your hidden personality traits with these mind-boggling optical illusions.
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