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Which of the following numbers will replace the question mark (?) in the given series?15, 17, 37, 115, ?
Question

Which of the following numbers will replace the question mark (?) in the given series?
15, 17, 37, 115, ?

A.

470

B.

465

C.

455

D.

460

Correct option is B

Given: 15, 17, 37, 115, ?
Logic: Series follow the pattern, as first multiply by 1, 2, 3, 4 and simultaneously add +2, +3, +4,+5
Explanation:
15×1+2=17
17×2+3=37
37×3+4=115
Similarly,
115×4+5=465
So, ? is replaced by 465.
Thus, Option B is the correct answer.

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