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Select the number from among the given options that can replace the question mark (?) in the following series.47, 64, 448, ?, 2315, 2328, 6984
Question

Select the number from among the given options that can replace the question mark (?) in the following series.
47, 64, 448, ?, 2315, 2328, 6984

A.

459

B.

465

C.

461

D.

463

Correct option is D

Given Series: 47, 64, 448, ?, 2315, 2328, 6987
47 to 64: 47+17=64
64 to 448: 64×7=448
448 to ?:
Following an alternating pattern (addition and then multiplication), we might try adding 15 here.
448+15= 463
463 to 2315: 463×5=2315
2315 to 2328: 2315+13=2328
2328 to 6987: 2328×3=6984
This pattern of alternating addition and multiplication fits, with the missing number being 463.
Correct answer: (d) 463

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