7, 9, 66, 12, 14, 66, 17, ... choose which pair of numbers comes next?

Praveen Singh • 36.81K Points
Coach Reasoning

Q. 7, 9, 66, 12, 14, 66, 17, ... choose which pair of numbers comes next?

(A) 19, 66
(B) 66, 19
(C) 19, 22
(D) 19, 22 D. 20, 66

Correct Answer - Option(A)

Explanation by: Praveen Singh

This is an alternating addition series with repetition, in which a random number, 66, is interpolated as every third number. The regular series adds 2, then 3, then 2, and so on, with 66 repeated after each "add 2" step.

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