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Advent calendar 2025
19 December
All 2025 advent puzzles
~
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Eve uses the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 to write five square numbers (using each digit exactly once). What is largest square number that she made?
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The square numbers must be 1, 9, 25, 36, and
784
.
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albgebra
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division
grids
parabolas
speed
pentagons
symmetry
clocks
colouring
chocolate
tiling
number
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christmas
consecutive integers
shape
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neighbours
geometry
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perfect numbers
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