Multiple choice

Directions: Find the wrong term in the series. 15, 21, 27, 34, 39, 45

  1. 45

  2. 39

  3. 27

  4. 34
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series is 15, 21, 27, 33, 39, 45. The difference is consistently 6. The term 34 is incorrect; it should be 33.

AI explanation

The differences between the consecutive terms are 6, 6, 7, 5, and 6. If the series followed a constant difference of 6, the fourth term would be 27 + 6 = 33. Since 33 is not present, let us look at the multiples of 3; all numbers except 34 are multiples of 3. The wrong term is 34.

Keep practicing — related questions