Multiple choice

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

40, 30, 21, 12, 6, 0, – 5

  1. 12

  2. 30

  3. 21

  4. 6
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A Correct answer
Explanation

The differences between the numbers are – 10, – 9, – 8, – 7, – 6, – 5. 40 – 10 = 30; 30 – 9 = 21; 21 – 8 = 13; 13 – 7 = 6; 6 – 6 = 0; 0 – 5 = – 5. 12 is the odd number.

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