Multiple choice

In the following question, the number series contains a wrong number. Find out that number. 67 35 17 11 7 5 4

  1. 35

  2. 17

  3. 11

  4. 7

  5. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

The series follows a pattern of subtracting consecutive prime numbers in descending order. The correct calculations should be 67 - 31 = 36, then 36 - 29 = 7, then 7 - 23 = -16, which clearly breaks the sequence provided. Based on the numbers given, the correct differences are 67 - 35 = 32, 35 - 17 = 18, 17 - 11 = 6, 11 - 7 = 4, and 7 - 5 = 2. Since the number 17 does not fit a logical mathematical pattern, it is the incorrect term. The result is 17.

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