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Ranjan Tiwari

· started a discussion

· 1 Months ago

9 (Question:474398.0)

i didnot understand

Question:

DIRECTIONS: Choose the correct alternative from the given ones that will complete the series.

6, 14, 36, 98, 276?

Options:
A)

546

B)

794

C)

693

D)

429

Solution:

 Ans: (b)

The nth term in the series is given by the sum of xn for x in the range of 1 to 3 i.e.

1st term →11 + 21 + 31    = 1 + 2 + 3 = 6

2nd term →12 + 22 + 32    = 1 + 4 + 9 = 14

and so on …

The sixth term →16 + 26 + 36

= 1 + 64 + 729

= 794


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