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Class 9 Maths Chapter 15 Probability Quiz 5 (8 MCQs)

Quiz Instructions

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1. In a cricket match, a batsman hits a boundary 6 times out of 30 balls she plays.Find the probability that she did not hit a boundary

Correct Answer: B) 4/5.

2. There are six nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and then return it to your pocket. Then you randomly pick another coin. What is the probability that the coin is a nickle both times?

Correct Answer: A) 36/169.

3. Sam rolled a number cube 50 times. A '3' appeared 10 times. Find the probability of getting numbers that are not '3'.

Correct Answer: C) $\frac{40}{50}$.

4. The chance of an event happening when expressed quantitatively is probability.

Correct Answer: A) CLASSICAL APPROACH.

5. A certain brand of TV has a 50% chance of being defective. Which model could be used to determine the probability that when two TVs are chosen, they will both be defective?

Correct Answer: C) Flip a coin twice.

6. Find the probability of rolling not a multiple of 3.

Correct Answer: A) $\frac{2}{3}$.

7. You flip a nickel three times.Find the probability that all flips will land on tails.

Correct Answer: D) 1/8.

8. Find the probability of each set of independent events.rolling a six on the first roll of a 1-6 number cube and rolling an odd number on the second roll of the same cube.

Correct Answer: A) 1/12.

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