Multiple choice

Directions: In the following number series, one of the terms is missing. Find the missing term from the given options. 30, 23, 17, 12, _____, 5.

  1. 6

  2. 7

  3. 8

  4. 9
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C Correct answer
Explanation

The differences between consecutive terms are: 30-23=7, 23-17=6, 17-12=5. Following this pattern, the next difference should be 4. Thus, 12-4 = 8. Checking the next step, 8-3 = 5, which matches the series.

AI explanation

The differences between consecutive terms are decreasing: 30 - 23 = 7, 23 - 17 = 6, and 17 - 12 = 5. Following this decreasing pattern, the next difference must be 4, making the missing term 12 - 4. The calculation gives 8, and checking the next step confirms 8 - 3 equals 5, so the result is 8.

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