Today’s Challenge
Which is the lowest whole number that is not a multiple of 5, 6, 7, 11 or 13 nor a prime number, square number or cube number?
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.
The 2nd & 6th rows of the playing board contain the following fourteen numbers:
5 8 12 17 18 20 28 33 48 49 55 56 63 64
From the above list, what is the sum of the multiples of 7?
Answers can be found here.
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