Question

Three dice of colours red, blue and green are rolled together. Let $A$ be the event that red die shows the number $1$ and $B$ be the event that the sum.Find probability of the event A.

• A. $\frac{2}{7}$
• B. $\frac{1}{6}$
• C. $\frac{1}{7}$
• D. $\frac{1}{3}$

Answer 1

The correct option is B $\frac{1}{6}$

Three dice of red, blue and green coloured are rolled

$\Rightarrow$ then sample space $=6^3=216$

$P\left(eventA\right)$ $=\frac{36}{216}=\frac{1}{6}$