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For the 3 numbers in a list, the average (arithmetic mean) and the median are equal to 8. If the greatest number in the list is 10 greater than the least number, what is the greatest number in the list?
The answer is
A. 8
B. 10
C. 13
D. 15
E. 16
準確謎底
C
標題剖析
三個數字均勻數8,則總和為24,中位數8,則最大和最小數字和為16,又知最大數比最小數大10,以是最大數為13,選C。