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Select the number from among the given options that can replace the question mark (?) in the following series.11, 20, 37, 69, 131, ?, 489​​
Question

Select the number from among the given options that can replace the question mark (?) in the following series.
11, 20, 37, 69, 131, ?, 489​​

A.

250

B.

254

C.

251

D.

253

Correct option is C

Given: 
11, 20, 37, 69, 131, ?, 489​​
Logic: Series us getting two times and subtraction of prime numbers(×2 − 1, ×2 − 3, ×2 − 5, ×2 − 7, ×2 − 11, ×2 −13) 
11 × 2 − 2 = 22 − 2 = 20 
20 × 2 − 3 = 40 − 3 = 37 
37 × 2 − 5 = 74 − 5 = 69 
69 × 2 − 7 = 138 − 7 = 131 
131 × 2 − 9 = 262 − 11 =251
251 × 2 − 13 = 506 − 13 = 489
Thus, correct option is (c).

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