Question

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

2 5 16 65 326 ?

A 1958 Correct Answer Incorrect Answer
B 1946 Correct Answer Incorrect Answer
C 1957 Correct Answer Incorrect Answer
D 1955 Correct Answer Incorrect Answer
E 1959 Correct Answer Incorrect Answer

Solution

2 × 2 + 1 = 5 5 × 3 + 1 = 16 16 × 4 + 1 = 65 65 × 5 + 1 = 326 326 × 6 + 1 = 1957

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