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  • Provide solution for RD Sharma maths class 12 chapter Probability exercise 30.6 question 10

Provide solution for RD Sharma maths class 12 chapter Probability exercise 30.6 question 10

Answers (1)

Answer:

 \frac{29}{63}

Hint:

 To solve this we use total probability

Given:

 Bag 1 → 4 white balls ; 5 black balls

 Bag 2 → 6 white balls ; 7 black balls

Solution:

P ( white ball is drawn ) =

P ( white ball transfer ) x P( white ball is drawn ) + P ( black ball transfer ) x P( black ball is drawn )

\begin{aligned} &=\frac{4}{9}\times \frac{7}{14}+\frac{5}{9}\times \frac{6}{14}\\ &=\frac{28}{126}+\frac{30}{126}\\ &=\frac{58}{126}=\frac{29}{63} \end{aligned}

Posted by

Gurleen Kaur

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