If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is
Arithmetic mean of 7, 5, 13, x and 9 = 10
=> $$\frac{(7+5+13+x+9)}{5}=10$$
=> $$34+x=10 \times 5=50$$
=> $$x=50-34=16$$
=> Ans - (D)
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