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Which of the following numbers will replace the question mark (?) in the given series? 191, 534, 318, 443, ?
Question

Which of the following numbers will replace the question mark (?) in the given series?
191, 534, 318, 443, ?

A.

420

B.

413

C.

379

D.

248

Correct option is C

Given: 191, 534, 318, 443, ?
Logic: The series increases and decreases by addition of +73, -63, +53, -43…. alternatively,
191 → 191 + 73 = 191 + 343 = 534
534 → 534 -63 = 534 – 216 = 318
318 → 318 + 53 = 318 + 125 = 443
443 → 443 – 43 = 443 – 64 = 379
Correct answer is (c) 379

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