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  • Please Solve R.D. Sharma class 12 Chapter 30 Probability Exercise Multiple Choice Questions Question 10 Maths Textbook Solution.

Please Solve R.D. Sharma class 12 Chapter 30 Probability  Exercise Multiple Choice Questions Question 10 Maths Textbook Solution.

Answers (1)

Answer: (c)

Hint: You must know the rules of finding probability.

Given: Three integers are chosen at random from first 20 integers

Solution: P (product is even) = 1 – P(product is odd)

\begin{aligned} &=1-\frac{10}{20} \times \frac{9}{19} \times \frac{8}{18} \\ &=1-\frac{9}{38} \times \frac{8}{18} \\ &=1-\frac{2}{19} \\ &=\frac{17}{19} \end{aligned}

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