New NABARD Grade A : How to prepare ESI for Prelims & Mains- Sources & Strategy
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Question

What will come in place of the question mark (?) in the following series?

15      32       51       74      ?        134

A 103 Correct Answer Incorrect Answer
B 107 Correct Answer Incorrect Answer
C 115 Correct Answer Incorrect Answer
D 110 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

15 + 17 = 32 32 + 19 = 51 51 + 23 = 74 74 + 29 =  103 103 + 31 = 134

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