What is the value of \(x\) if the mean of \(8,6,7\), \(5, x\) and 4 is 7 ?
What is the value of \(x\) if the mean of \(8,6,7\), \(5, x\) and 4 is 7 ?
- 10
- 12
- 8
- 6
Solution
\(\begin{aligned}
& \text {Mean }=7 \\
& \begin{aligned}
\frac{8+6+7+5+x+4}{6} & =7 \\
30+x & =42 \\
x & =12
\end{aligned}
\end{aligned}\)
Hence, option (b) is correct.
Asked in: AP EAMCET 2020 (18 Sep Shift 2)
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