Only a genuine genius can solve this 'fiendish' puzzle in just 30 seconds

It's time to put your intellect to the ultimate test with this baffling riddle.

If you're always boasting about how much of a smart pants you are, or consider yourself a modern day Einstein on the brink of big scientific breakthrough - this fiendish should be a breeze. However, you'll need to crack the puzzle in just 30 seconds or less to prove that you are in fact a genuine genius.

Brainteasers like this are a great way to pass the time and partake in a healthy bit of competition with your friends and family - there is also evidence they can improve your cognitive ability when it comes to concentration and attention levels due to a positive impact on the central nervous system. So, let's get to it and give your mind a tough mental workout.

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"You are in a room with three monkeys," the riddle above reads. "One monkey has a banana, one has a stick, and one has nothing. Who is the smartest primate?"

We're not giving away any clues on this one, but if you're feeling completely stuck don't worry about the strict time limit - or try giving yourself a more generous allowance of two minutes. Admitting defeat already - or think you've cracked it? Scroll down to the bottom of the article for the answer.

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If that puzzle was no match for boffin like yourself, it's time to take on this mind-boggling brainteaser that is bound to leave you scratching your head. You'll need sharp English and analytical skills to be able to solve this under the 45 seconds time limit. Ready?

"Mrs. Watt has five children. The oldest four children's names are Lala, Lele, Lili, and Lolo," the riddle reads. "What is the name of the youngest child - why do people laugh at her name?"

Most people will quickly jump to the conclusion that the child must be called Lulu. This is because the first four children have the same name with different vowels - and 'U' is the last one available. However, this is not correct. Feeling stumped and wanting to surrener? .

ANSWER: YOU - because humans are primates.

You can check out more of our challenging here. Or, why not have a go at these that could end up revealing a lot about your personality.

Did you manage to get the answer right? Let us know in the comments section below