DAY 218

Today’s Challenge

From all odd numbers in the range 1-23 inclusive, eliminate all prime numbers and multiples of 3.  Which number is the only one that remains?

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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 3rd & 4th rows of the playing board contain the following fourteen numbers:

3     10     13     25     32     35     36     42     44     45     54     60     66     80

Which is the only number that, when adding 10 to it, becomes a square number?

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Answers

. . . can be found when clicking this.

7puzzleblog

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