Basic Concepts of Probability Quiz - CBSE Class 9 Mathematics

Free practice quiz: Basic Concepts of Probability (CBSE Class 9 Mathematics). 16 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the probability of drawing a heart from a standard deck of 52 cards?

   1. 1/2
   2. 1/4
   3. 1/3
   4. 1/5
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   Answer: B. 1/4

   There are 4 suits in a deck, each with an equal probability. Therefore, the probability of drawing a heart is 1/4.

2. What is the probability that a randomly selected day of the week will be a weekend day?

   1. 1/2
   2. 2/7
   3. 5/7
   4. 1/7
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   Answer: B. 2/7

   There are 7 days in a week, and 2 are weekend days (Saturday and Sunday), so the probability is 2/7.

3. What is the probability of getting an even number when rolling a standard six-sided die?

   1. 1/2
   2. 1/3
   3. 2/3
   4. 1/4
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   Answer: A. 1/2

   There are 3 even numbers (2, 4, 6) on a die, so the probability is 3/6 = 1/2.

4. What is the probability that a randomly chosen month will have 31 days?

   1. 7/12
   2. 5/12
   3. 6/12
   4. 1/2
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   Answer: A. 7/12

   There are 7 months with 31 days (January, March, May, July, August, October, December), so the probability is 7/12.

5. If a die is tossed twice, what is the probability that both results will be 5?

   1. 1/36
   2. 1/6
   3. 1/2
   4. 1/12
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   Answer: A. 1/36

   The probability of each roll being 5 is 1/6. For two rolls, it's (1/6) x (1/6) = 1/36.

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