ArithmeticQuestion 291 of 550

The mean of five numbers is 12. What sixth number makes the mean of all six numbers 14?

  1. 26
  2. 14
  3. 18
  4. 24
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Correct answer: 24

Sum of six numbers = 14 × 6 = 84. Sum of five numbers = 12 × 5 = 60. The sixth number = 84 − 60 = 24.

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Questions last reviewed: 21 October 2026