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In the following question, select the missing number from the given series.700, 697, 688, 661, 580, ?
Question

In the following question, select the missing number from the given series.
700, 697, 688, 661, 580, ?

A.

338

B.

350

C.

340

D.

337

Correct option is D

Given700, 697, 688,661, 580, ?
Logic: Difference is multiply by 3 is each time.
700 - 697 = 3
697 - 688 = 9
688 - 661 = 27
661 - 580 = 81
Observing the pattern:
3 × 3 = 9
9 × 3 = 27
27 × 3 = 81
The difference is multiplied by 3 each time.
Now, continue the pattern:
81 × 3 = 243
Find the missing number:
580 - 243 = 337
The missing term is 337.
Thus, correct option is (d).

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