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1, 3, 10, 21, 64, 129, 356, 777...

1, 3, 10, 21, 64, 129, 356, 777

A

21

B

129

C

10

D

356

Text Solution

Verified by Experts

The correct Answer is:
D
The correct pattern is `xx2+1,xx3+1,xx2+1, xx3+1,...`
So, 356 is wrong and must be replaced by `(129xx3+1)` i.e. 388.
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