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  • Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise 30.3 question 16.

Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise 30.3 question 16.

Answers (1)

Answer: \frac{2}{3}

Hint: Use,   P(B \mid A)=\frac{P(A \cap B)}{P(A)}

Given,

            A= No. is odd

            B=No. is prime

Solution:

Clearly,

\begin{aligned} &A=\{1,3,5\} \\ &B=\{2,3,5\} \\ &A \cap B=\{3,5\} \end{aligned}
            

 Required Probability P(B \mid A)=\frac{P(A \cap B)}{P(A)}

=\frac{2}{3}

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