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In "Number Series" question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces

In the series 7, 14, 28, ..., what will be the 10th term ?

Option:
A. 1792
B. 2456
C. 3584
D. 4096
Answer: C . 3584

Justification:

Clearly, 7 x 2 = 14,
14 x 2 = 28, ... so on.
So, the given series in a G.P. in which a = 7 and r = 2.
.'. 10th term = ar(10 - 1) = ar9 = 7 x 29 = 7 x 512 = 3584.
Hence the answer is (c).

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