MathematicsStatisticsWAEC
The mean of five numbers is 12. If four of them are 10, 14, 8 and 15, the fifth is
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Answer: C. 13
Sum of five numbers = 5 × 12 = 60; 60 − (10 + 14 + 8 + 15) = 13.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.