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Find the missing value: 17 : 4624 :: ? : 180 :: 13 : 2028

1. 4
2. 7
3. 6
4. 11

Correct answer: 6

Solution

Rule: n^2 x (n-1). For n=17: 289 x 16 = 4624. For n=13: 169 x 12 = 2028. For output 180: n^2 x (n-1) = 180. Try n=6: 36 x 5 = 180. So ? = 6.

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