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Provide Solution For  R.D. Sharma Maths Class 12 Chapter 30 Probaility  Exercise Multiple Choice Questions Question 28 Maths Textbook Solution.

Answers (1)

Answer: (a)

Hint: You must know the rules of finding probability.

Given:P(A \cap B)=\frac{7}{10}, P(B)=\frac{17}{20}

Solution:

P(A \cap B)=\frac{7}{10}, P(B)=\frac{17}{20}

Now,

\begin{aligned} &P\left(\frac{A}{B}\right)=\frac{P(A \cap B)}{P(B)} \\ &=\left(\frac{7}{10}\right) \times\left(\frac{20}{17}\right) \\ &=\frac{14}{17} \end{aligned}

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