The mean of 1, 3, 5, 7 and x is 4. Find the value of x
The mean of 1, 3, 5, 7 and x is 4. Find the value of x
2
4
6
8
Correct answer is B
Mean = ∑xn
4 = 1+3+5+7+x5
4 x 5 = 16 + x
20 - 16 = x
4 = x
x = 4
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