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The answer could also logically be (a) 5: 81 - a 'square' number (9x9) 52 - an even number 47 - a prime number 4 - a 'square' number (2x2) 70 - an even number 5 - a prime number (which 14 and 21 are … (View Post)
Firstly, thanks all for your (more or less) thoughtful responses. To summarise the "results" so far, most comments seem to be along the lines of: 1. Hey, it works for me Unfortunately, as I… (View Post)