Multiple choice

Directions: Complete the following number series:

10, 15, 25, 35, 55, 65, ?

  1. 85

  2. 102

  3. 95

  4. 115

  5. None of these
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A Correct answer
Explanation

The given pattern of this series is: 5 is multiplied by consecutive prime numbers starting from 2, i.e. 5 x 2 = 10, 5 x 3 = 15, 5 x 5 = 25, 5 x 7 = 35, 5 x 11 = 55, 5 x 13 = 65, and so on. Therefore, the next term is 5 x 17 = 85.

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