Advent calendar 2018

16 December

Arrange the digits 1-9 in a 3×3 square so that the first row makes a triangle number, the second row's digits are all even, the third row's digits are all odd; the first column makes a square number, and the second column makes a cube number. The number in the third column is today's number.
all digits even
all digits odd
squarecubetoday's number

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Tags: numbers, grids


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