2, 3, 4, 5, 6, 4, 8, ... choose which pair of numbers comes next?

A 9, 10

B 4, 8

C 10, 4

D 9, 4

E 8, 9

Solution

Correct Answer: Option D

This is an alternating addition series with a random number, 4, interpolated as every third number. In the main series, 1 is added, then 2 is added, then 1, then 2, and so on.

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