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  • Please Solve R.D. Sharma class 12 Chapter 30 Probability Exercise Multiple Choice Questions Question 12 Maths Textbook Solution.

Please Solve R.D. Sharma class 12 Chapter 30 Probability  Exercise Multiple Choice Questions Question 12 Maths Textbook Solution.

Answers (1)

Answer: (d)

Hint: You must know the rules of finding probability.

Given: Bag = (5B + 4W + 3R) balls

Solution: We know that the bag contains 5B + 4W + 3R = 12 balls

Now,

\begin{aligned} &P(B)=\frac{5}{12} \\\\ &P(R)=\frac{3}{12} \\\\ &P(B \text { or } R)=P(B)+P(R) \\ \end{aligned}

\begin{aligned} &=\frac{5}{12}+\frac{3}{12} \\\\ &=\frac{8}{12}=\frac{2}{3} \end{aligned}

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