What number should replace the question mark in the following series? 1 , 1 , ? , 15 , 105 , 945 1, 1, ?, 15, 105, 945 1 , 1 , ? , 15 , 105 , 945

Question

What number should replace the question mark in the following series?

1,1,?,15,105,9451, 1, ?, 15, 105, 945

Options

A.

2

B.

3

C.

4

D.

1.5

E.

2.5

number serieslogical reasoningpattern recognition

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