In the list 7,9,10,11,18, which number is the average (mean) of the other four numbers?
Answer Choices
A. 9
B. 18
C. 7
D. 11
E. 10
In the list 7,9,10,11,18, which number is the average (mean) of the other four numbers?
Answer Choices
A. 9
B. 18
C. 7
D. 11
E. 10