DAY 318

Today’s Challenge

. . . is a number puzzle associated with my board game, Mathematically Possible  – an excellent resource involving mental arithmetic and strategy.

Using the numbers 2, 5 and 10 once each, with + – × ÷ available, which 11 target numbers from 1-30 are mathematically possible to achieve?

Details of our board game can be found at mathematicallypossible.com.

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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 2 up to 84.

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

3     4     6     12     15     17     20     35     42     63     72     77     80     81

What is the sum of the square numbers?

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Answers

. . . can be found when clicking this.

7puzzleblog

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