Question

If $P\left(C\right)=\frac{2}{7}$, then $P\left(\overline{C}\right)=$.......................

• A. $\frac{5}{7}$
• B. $\frac{2}{7}$
• C. $0$
• D. $1$

Answer 1

Answer: (A)

$\frac{5}{7}$

Given $P\left(C\right)=\frac{2}{7}$
We know that $P\left(C\right)+P\left(\overline{C}\right)=1$

$⟹P\left(\overline{C}\right)=1-P\left(C\right)=1-\frac{2}{7}=\frac{5}{7}$

Hence, the answer is $\frac{5}{7}$.