R

Ritu Singhal • 4.36K Points
Extraordinary Reasoning

Q. 8, 11, 21, 15, 18, 21, 22, ... choose which pair of numbers comes next?

  • (A) 25, 18
  • (B) 25, 21
  • (C) 25, 29
  • (D) 25, 29 D. 24, 21
  • Correct Answer - Option(B)
  • Views: 86
  • Filed under category Reasoning
Explanation by: Ritu Singhal
This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.

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