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  • Need Solution for R.D.Sharma Maths Class 12 Chapter 30 Probability Exercise 30.5 Question 31 Sub Question 3 Maths Textbook Solution.

Need Solution for R.D.Sharma Maths Class 12 Chapter 30 Probability  Exercise 30.5 Question 31 Sub Question 3 Maths Textbook Solution.

Answers (1)

Answer:\frac{17}{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 { same colour })=P(\text { both red })+P(\text { both blue }) \\ &=\frac{5}{8} \times \frac{5}{8}+\frac{3}{8} \times \frac{3}{8} \\ &=\frac{25+9}{64} \\ &=\frac{34}{64}=\frac{17}{32} \end{aligned}

    

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