DAY 273

Today’s Challenge

Start with the number 70, then keep on subtracting consecutive prime numbers from the previous total (2, 3, 5, …).  What is the first negative answer you reach?

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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 2nd & 7th rows contain the following fourteen numbers:

4     8     11     17     24     27     28     30     48     55     63     64     70     77

What is the sum of the multiples of 6?

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Answers

. . . can be found when clicking this.

7puzzleblog

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