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  • Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 5 sub question (ii).

Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 5 sub question (ii).

Answers (1)

Answer:

            (c)

Hint:

            You must know rules of finding probability

Given:

            Machine A produce 1% defective item, B produce 5%, C produce 7%. Operator A on job for 50% of time B on job for 30% and C on job for 20%

Solution:

The probability that an item produced is defective given that it is produced by C

\begin{aligned} &P\left(\frac{D}{C}\right)=7 \% \\ &=\frac{7}{100} \\ &=0.07 \end{aligned}

So, (c) is correct answer

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