Multiple choice

Find the wrong number in the sequence. 6 12 18 21 30 36

  1. 12

  2. 18

  3. 21

  4. 30
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C Correct answer
Explanation

The sequence is 6, 12, 18, 24, 30, 36. The pattern is multiples of 6. 21 is the wrong number as it should be 24.

AI explanation

Let us check the divisibility of the numbers by 6 to find the pattern in the sequence. The numbers 6, 12, 18, 30, and 36 are all perfectly divisible by 6. Since 21 is not divisible by 6, it is the wrong number in the sequence.

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