Multiple choice

Directions: In the following number series one number is wrong. Find out the wrong number. 23, 69, 345, 2412, 21735, 239085

  1. 69

  2. 345

  3. 2412

  4. 21735

  5. 239085
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C Correct answer
Explanation

The pattern is *3, *5, *7, *9... 23*3=69, 69*5=345, 345*7=2415. The number 2412 is incorrect; it should be 2415.

AI explanation

The series follows a pattern where each term is multiplied by consecutive odd numbers starting from 3. The second term is 23 multiplied by 3, equaling 69, and the third term is 69 multiplied by 5, equaling 345. Following this pattern, the fourth term should be 345 multiplied by 7, which equals 2415. Since the given series lists 2412 instead of 2415, it is the wrong number.

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