Multiple choice

Directions: Find the wrong term in the series. 2, 4, 3, 9, 4, 15, 5, 25

  1. 15

  2. 9

  3. 5

  4. 25
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A Correct answer
Explanation

The series is composed of two interleaved series: 2, 3, 4, 5 and 4, 9, 15, 25. The first is n+1. The second is 2^2, 3^2, 4^2, 5^2. The term 15 should be 16 to fit the square pattern.

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