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Number System Questions

  • Numerical Ability - Number System
Question

Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

  • A) 7
  • B) 10
  • C) 12
  • D) 13
  • E) 14
Solution

This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.

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