In this pyramid number if: 11 22 31 : 12 21 32 :: 9 12 21 : ?
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9 = (3)2
8 = (3 - 1)3
and 16 = (4)2
? = (4 - 1)3 = 27
24 → 2 x 4 = 8
32 → 3 x 2 = 6
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