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  • Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 6 sub question (ii).

Need solution for RD Sharma Maths Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 6 sub question (ii).

Answers (1)

Answer:

            (b)

Hint:

            You must know rules of conditional probability

Given:

            Chance of question solved by Aarushi is 30%, Avni is 25% and Mira is 45%, the probability error done by Aarushi 0.01, Avni 0.012, Mira 0.02

Solution:

The probability that Mira solved the question and committed an error

P (Mira solved and committed error) = 45\%\times 0.02

\begin{aligned} &=\frac{45}{100} \times 0.02 \\ &=0.45 \times 0.02 \\ &=0.0090 \end{aligned}

So, (b) is correct answer

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