Question 45

Insert the missing number
16,33,65,131,261, (.........)

Solution

The series is formed by the odd terms being multiplied by 2n + 1 and the even terms being multiplied by 2n - 1. Since 261 is the fifth term (odd term), it is multiplied by 2n + 1. So, the answer is A.

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Insert the missing number16,33,65,131,261, (.........)

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Insert the missing number
16,33,65,131,261, (.........)