1, 2, 6, 24, ? , 720

Answer : D . 120

1, 2, 6, 24, ? , 720

A . 100

B . 104

C . 108

D . 120

Answer : D . 120

Explanation:

The given series is the pattern x1, x2, x3, x4, …………. so, the missing term = 24 x 5 = 120
1 x 2 = 2
2 x 3 = 6
6 x 4 = 24
24 x 5 = 120
120 x 6 = 720

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