Multiple choice

Directions: Find the wrong term in the series. 3, 10, 19, 30, 43, 60, 75

  1. 19

  2. 30

  3. 43

  4. 60
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The differences are: 10-3=7, 19-10=9, 30-19=11, 43-30=13, 60-43=17, 75-60=15. The differences should be 7, 9, 11, 13, 15, 17. The term 60 is wrong because 43+15=58, and 58+17=75.

AI explanation

The series follows a pattern of adding consecutive prime numbers. The differences between the terms are 7, 9, 11, 13, 17, and 15. The number 60 should be replaced by 62 because adding the prime number 17 to 45 equals 62, and adding the next prime number 19 to 62 equals 81, making 60 the wrong term.

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