Based on the number series given, fill in the missing number. 18, 37, 76, 155, ________, 633, 1272
The logic employed is as follows:
18*2 + 1Â = 36 + 1 = 37
37*2 +Â 2 = 74 + 2 = 76
76*2 +Â 3 = 152 + 3 = 155
155*2 +Â 4 = 310 +Â 4 = 314
314*2 +Â 5 = 628 + 5 = 633
As we can see, the blank should be filled by 314. Therefore, option B is the right answer.Â
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