MathematicsStatisticsJAMB
The mean of 10 numbers is 6. When one number, 15, is removed, what is the mean of the remaining numbers?
Show answer
Answer: D. 5
The total is 60; removing 15 leaves 45 for 9 numbers, so the mean is 5.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.