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Need Solution for R.D.Sharma Maths Class 12 Chapter 30 Probability  Exercise 30.5 Question 30 Sub Question 1 Maths Textbook Solution.

Answers (1)

Answer:\frac{1}{35}

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

Given:

P\left ( Fatima\: gets\: selected \right )=\frac{1}{7}=P\left ( A \right )

P\left ( John\: gets\: selected \right )=\frac{1}{5}=P\left ( B \right )

Solution:

P\left ( Both \: gets\: selected \right )=\frac{1}{5}=P\left ( A\cap B \right )

=P\left ( A \right )\times P\left ( B \right )

=\frac{1}{7}\times\frac{1}{5} =\frac{1}{35}

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