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

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

Answers (1)

Answer:

            (a)

Hint:

            You must know rules of finding 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 total probability of committing error in solving question,

P (Aarsuhi) + P (Avni) + P (Mira)

\begin{aligned} &=30 \% \times 0.01+25 \% \times 0.012+45 \% \times 0.02 \\ &=\frac{30}{100} \times 0.01+\frac{25}{100} \times 0.012+\frac{45}{100} \times 0.02 \\ &=0.003+0.003+0.009 \\ &=0.015 \end{aligned}

So, (a) is correct answer

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