Multiple choice

Directions: In the following number series, one number is wrong. Find out the odd number.

2, 9, 30, 68, 130, 222, 350

  1. 9

  2. 30

  3. 68

  4. 130

  5. None of these
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A Correct answer
Explanation

The sequence is n3 + n, i.e. 13 + 1 = 2; 23 + 2 = 10; 33 + 3 = 30; 43 + 4 = 68; 53 + 5 = 130; 63 + 6 = 222; 73 + 7 = 350. 9 is the odd one out.

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