SOLUTION: 3,3,6,18,?,360,2160 What comes in the question mark?

SOLUTION: 3,3,6,18,?,360,2160 What comes in the question mark?

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Question 1088060: 3,3,6,18,?,360,2160
What comes in the question mark?
Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.
= 3*n!, n = 0, 1, 2, 3, . . .

? = 3*4! = 3*24 = 72.

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