Only the brightest minds in the country can solve this 'fiendishly' difficult brainteaser

This puzzle is a real head scratcher, and can only be solved by those with the sharpest minds.

Some are just for fun, others can help distract the little ones for a couple of minutes or help you feel like you've given your mind a mental workout; research even suggests regularly trying these kinds of puzzles can improve your cognitive ability, reduce stress, an help with concentration and attention levels. However, this particular takes things up a notch, and puts your intelligence (or lack of) to the ultimate test. So, consider yourself the Einstein of the family? Think you have what it takes to protect the from evil and become the next 007? Well, it's time to test that theory out...

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Created by the Government Communications Headquarters (GCHQ) back in 2020, this taxing puzzle has no time limit due to its fiendish nature. You need to find the hidden word amongst the following five:

• Madison
• Saturn
• Do
• Nitrogen
• Exodus

If you're thinking of surrendering, you can check out these to help you improve your enigma abilities. We're not giving away any clues for this one, so get that James Bond thinking cap on and find the answer. Admitting defeat already? Scroll down to the bottom of the article for the solution.

If that was no match for an absolute genius like yourself, don't worry - we've got another GCHQ puzzle bound to leave you baffled. This one might be labelled as 'family-friendly' but don't be fooled, it's far from easy. You'll still need a razor sharp mind, strong analytical skills, and an unflappable ability to work well under pressure. Let's see how quickly you can work out which of the following word or phrases is the odd one out. When you think you've cracked it, you can . It might help writing these words down to figure out which one seems a little out of place.

• Catwoman
• Deus Ex Machina
• Parishioner
• Pyromania
• Scuba

ANSWER: INDEX. Each word is the nth in a sequence. US Presidents, planets in the solar system, the tonic sol-fa scale, periodic table, books of the bible. "By taking the nth letter in the word you can spell out INDEX," explains GCHQ. Did you get the answer right? Let us know in the comments section below. You can also click here for more , or check out these that could reveal a lot about your personality.

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