DAY 21:

Today’s Challenge

Which is the lowest whole number that is not a multiple of 4, 5 or 6, nor a prime number, square number or cube number?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from up to 84.

The 2nd & 4th rows of the playing board contain the following fourteen numbers:

3     8     10     17     28     32     35     44     48     54     55     60     63     64

Which odd number, when 1 is subtracted from it, becomes a prime number?

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Answers

. . . can be found when clicking this.

7puzzleblog

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