If the arithmetic mean of 1 2 3 4 5 6 x 16 and ... - JAMB Economics 2001 Question
If the arithmetic mean of 1,2,3,4,5,6,x, 16 and 18 is 8.0, find the value of x?
A
7.0
B
6.0
C
8.5
D
8.0
correct option: a
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