Multiple choice

A number series is given below, in which only one number is wrong. Find out the wrong number. 6, 15, 33, 68, 141, 285, 573

  1. 68

  2. 33

  3. 15

  4. 6

  5. None of these
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A Correct answer
Explanation

Pattern: x2+3, x2+3... 6*2+3=15, 15*2+3=33, 33*2+3=69 (not 68), 69*2+3=141. The number 68 is incorrect.

AI explanation

The pattern of the series is 6 multiplied by 2 plus 3 equals 15, then 15 multiplied by 2 plus 3 equals 33. Following this logic, 33 multiplied by 2 plus 3 equals 69, but the given number is 68. Therefore, 68 is the wrong term in the series.

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