Multiple choice

Directions: Find the missing term in the following series. 4.12, 3.12, 5.12, 12.12, 26.12, ?

  1. 28.4

  2. 49.12

  3. 33.11

  4. 33.9

  5. 51.9
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B Correct answer
Explanation

The integer parts are 4, 3, 5, 12, 26. Differences: -1, +2, +7, +14. Second differences: +3, +5, +7. Next second difference is +9, so next first difference is 14+9=23. Next term is 26+23=49. The decimal part remains .12.

AI explanation

Ignoring the decimal parts, the integer series follows a sum of previous two integers plus 4, starting with 4 + 3 = 7, and 3 + 7 + 4 = 14, which results in 49 as the next integer. Since the decimal part remains constant at 0.12, the next term is 49.12.

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