1.

If the arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x isA. 10B. 12C. 14D. 16

Answer»

Correct answer is D.

Mean \(=\frac{(7+5+13+x+9)}{5}\)

\(10=\frac{(34+x)}{5}\)

50 - 34 = x

x = 16



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