Today’s Challenge
. . . is a MATHELONA number puzzle where you must solve all four lines arithmetically by replacing the 16 ◯’s below with digits 0-9.
Each digit 0-9 can only be inserted a maximum of TWICE in the whole puzzle:
◯ + ◯ = 5 = ◯ + ◯
◯ + ◯ = 3 = ◯ – ◯
◯ + ◯ = 10 = ◯ × ◯
◯ + ◯ = 1 = ◯ ÷ ◯
If you enjoyed this, click MATHELONA for details of my number puzzle pocket book.
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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 5th & 7th columns of the playing board contain the following fourteen numbers:
5 8 9 11 14 18 24 25 28 32 44 50 66 84
Which three numbers, when 11 is subtracted from each, all become multiples of 7?
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Answers
. . . can be found when clicking this.
