Multiple choice

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

3, 6, 9, 18, 72, 360, 2160

  1. 3

  2. 9

  3. 18

  4. 72

  5. 360
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sequence is × 1, × 2, × 3, × 4, × 5 etc. i.e., 3 × 1 = 3; 3 × 2 = 6; 6 × 3 = 18; 18 × 4 = 72; 72 × 5 = 360; 360 × 6 = 2160. 9 is the odd one out.

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