Multiple choice

Directions: In this question, a number series is given. Find out the missing number in the series. 4.2, 7.7, 11.95, 16.95, 22.7, ?

  1. 25.71

  2. 29.20

  3. 27.90

  4. 32.45

  5. 40.95
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Differences: 7.7 - 4.2 = 3.5; 11.95 - 7.7 = 4.25; 16.95 - 11.95 = 5.0; 22.7 - 16.95 = 5.75. The differences increase by 0.75 each time. Next difference = 5.75 + 0.75 = 6.5. Next number = 22.7 + 6.5 = 29.2.

AI explanation

The differences between the consecutive terms are 3.5, 4.25, 5, and 5.75. The differences between these values are a constant 0.75. Increasing the last difference of 5.75 by 0.75 gives the next difference of 6.5. Adding 6.5 to the last term gives 22.7 + 6.5, which equals 29.20.

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