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.
