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A series is given with one term missing....

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?

A

1240

B

2640

C

1680

D

2520

Text Solution

Verified by Experts

The correct Answer is:
A
`1xx 7 = 7`
`7 xx 6 =42`
`42 xx 5 = 210`
`840 xx 3 = 2520`
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