Question

If the Arithmetic mean of $8,6,4,x,3,6,0$ is $4$; then the value of $x=$

• A. $7$
• B. $6$
• C. $1$
• D. $4$

Answer 1

Answer: (C)

$1$

Arithmetic mean $=\frac{\text{sum of all observations}}{\text{no. of observations}}$

$\Rightarrow 4=\frac{8+6+4+x+3+6+0}{7}\Rightarrow 28=27+x\Rightarrow x=1$