Today’s Challenge
Can you make all three lines work out arithmetically by replacing the nine ◯’s below with the nine numbers 1, 2, 3, 4, 5, 6, 10, 11 and 12?
◯ + ◯ = ◯
◯ + ◯ = ◯
◯ + ◯ = ◯
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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 2 up to 84.
The 1st & 5th rows contain the following fourteen numbers:
2 6 7 9 14 15 16 21 22 40 50 72 81 84
Which number, when 10 is added to it, becomes a multiple of 7?
Answers can be found here.
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