Funbers 15

15 is possibly the most ‘quotable’ of the double digit numbers, with everyone from Andy Warhol to Jack Sparrow using it in one way or another. It’s also the total of every row, column and diagonal in a 3 x 3 magic square containing the numbers 1-9 and the average amount of seconds an employer spends looking at an applicants CV… It’s time for some fun with numbers!

You can listen to all of the Funbers episodes from BBC Radio Cambridgeshire and BBC Radio Oxford here.

What is the graph of x to the power x?

The answer to the latest question sent in and voted for by YOU.

A tricky question, but one that we can answer by breaking the problem down into simpler cases, solving them, and then putting it all back together. This question is also a favourite with university admissions tutors…

 

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