'Confusing' maths brain teaser is so hard people don't even 'understand question'

This maths has been leaving people confused.

How good are you at maths? Some of us will readily admit it's not our strongest subject, but others amongst us relish the thought of solving a complex equation or who can work out percentages in their head in seconds. No matter what your skill level when it comes to maths, keeping your brain active by solving puzzles and is vital for cognitive , and maths questions are a great way to achieve that.

This latest maths-related puzzle has been leaving people scratching their heads, however, as some say it's so difficult that they "don't even understand the question", let alone what the answer should be. So if you're looking for a challenge, give this perplexing puzzle a try.

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In a video shared on by Talk to the Nation, they posed a seemingly simple question and filmed one woman's attempt to answer it. While she did reach the correct answer at the end of the video, the process still left people in the comments confused - and some couldn't even understand what was being asked.

The question was this: "What is the 100th digit between 1 and 100?"

It shouldn't be that tricky to work out, but you do need to do some maths to get to the right answer. We can tell you now that the answer is not simply "100", as the question is asking for specific digits, not whole numbers. For example, the 10th digit is 1, and the 11th digit is 0, as these make up the two digits of the number 10.

The woman in the video worked out the answer easily but declared at the end of the clip that she had a maths degree - so she knows her way around a sum. If you're struggling to work out the answer, don't scroll any further as we're about to reveal all.

Answer

The 100th digit is 5. Specifically, the first 5 of the number 55.

You can work this out easily by using a little bit of maths and a whole lot of logic. First, you should take away 9 from 100 to symbolise the numbers 1-9, which are single digits. This leaves you with 91, which you then divide by two. You do this because the remaining numbers 10-99 are all double digits, so each number is two digits.

Once you've halved 91 and got to 45.5, you then add the nine single digits back on, getting you to 54.5. In the context of the puzzle, the extra 0.5 denotes the first half of the next number, meaning the 100th digit is 5.

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