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  • Need Solution for R.D.Sharma Maths Class 12 Chapter 30 Probability Exercise 30.5 Question 31 Sub Question 2 Maths Textbook Solution.

Need Solution for R.D.Sharma Maths Class 12 Chapter 30 Probability  Exercise 30.5 Question 31 Sub Question 2 Maths Textbook Solution.

Answers (1)

Answer: \frac{15}{32}

Hint: You must know the rules of finding probability functions.

Given: Bag contain 3 blue and 5 red marbles

Solution:    

Total no. of marbles =8 marbles

\begin{aligned} &P(\text { red and blue in any order })=P(\text { blue followed by red })+P(\text { red followed by blue }) \\ \end{aligned}

\begin{aligned} &=\frac{3}{8} \times \frac{5}{8}+\frac{5}{8} \times \frac{3}{8} \\\\ &=\frac{15}{64}+\frac{15}{64} \\\\ &=\frac{30}{64}=\frac{15}{32} \end{aligned}

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