DAY 46:

Today’s Challenge

FOUR is the smallest positive integer that has exactly three factors; these are 1, 2 and 4. When finding the next integer to have exactly three factors, what is the product of these three factors?

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The 7puzzle Challenge

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

The 3rd & 7th rows contain the following fourteen numbers:

4     11     13     24     25     27     30     36     42     45     66     70     77     80

What is the sum of the multiples of 10?

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Answers

. . . can be found when clicking this.

7puzzleblog

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