Multiple choice

Directions: In the following series, choose the term that does not belong to the series: 3, 8, 15, 24, 34, 48, 63

  1. 15

  2. 24

  3. 34

  4. 48
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pattern: n^2 - 1. 2^2-1=3, 3^2-1=8, 4^2-1=15, 5^2-1=24, 6^2-1=35 (not 34), 7^2-1=48, 8^2-1=63. 34 is the incorrect term.

AI explanation

The differences between the consecutive terms form a sequence of even numbers. The difference between 3 and 8 is 5, between 8 and 15 is 7, between 15 and 24 is 9, and the difference between 24 and 48 is 24, which clearly breaks the pattern. To follow the sequence of adding consecutive odd numbers, the term after 24 should be 24 + 11 = 35, making 34 the incorrect term.

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