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What should come in place of the question mark (?) in the following series? 1,17, 33, 49, 65 ,?

A79

B77

C80

D81

Answer:

D. 81

Read Explanation:

Look at the pattern:

1, 17, 33, 49, 65, ?

Find differences

  • 17 − 1 = 16

  • 33 − 17 = 16

  • 49 − 33 = 16

  • 65 − 49 = 16

So the pattern is +16 each time.

Next term


65 + 16 = 81

Final Answer:

81


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