# CBSE Class 9 Maths Probability Chapter 15 MCQ

CBSE CLASS 9 MATHEMATICS/ MCQ

Multiple Choice Questions / PROBABILITY – Chapter 15

1. The probability of an event lies between ——– and ————

A. 0 and 1

B. 1 and 2

C. 0 and -1

2. The empirical (or experimental) probability p (E) of an event E is given by —

A. Number of trials in which E has happened / Total number of trials

B. Total number of trials / Number of trials in which E has happened.

C. None of these.

3. A coin is tossed 100 times with the following frequencies:

Head: 45, Tail: 55

The probability for each event is ———————

A. 0.45, 0.55

B. 4.5, 5.5

C. 0.045, 0. 055

4. If P (E) = 0.47 then P (not E) will be ————–

A. 0.47

B. 0.53

C. 0.03

5. Probability of getting odd number in a single throw of dice is ————-

A. ¼

B. ½

C. 1/6

6. Empirical probability of an event is also known as —————-

A. Experimental probability

B. Subjective probability

C. Classic probability

7. When a dice is thrown once, the probability of getting a number 2 or 3 is —–

A. ½

B. 1/3

C. ¼

8. When a coin is tossed, the probability of getting head is ———-

A. ½

B. ¼

C. 1/6

9. There are 4 red and 3 blue balls in a basket. The probability of getting a blueball is ————–

A. 3/7

B. 4/7

C. 7/7

10. The probability of getting an ace card from a well shuffled pack of 52 cardsis —————–

A. 1/13

B. 12/13

C. 13/52

11. Which of the following cannot be the probability of an event?

A. 2/7

B. 0.75

C. 1.2

12. If an event cannot occur, then its probability is ———–

A. One

B. Zero

C. Two

13. Probability of a sure event is ————-

A. One

B. Two

C. Zero

14. Sum of the probabilities of all events of a trial is ————

A. One

B. Two

C. Zero

15. Performing an experiment once is called —————

A. Trial

B. Error

C. Sample

**ANSWERS:**

1. 0 and 1

2. P (E) = Number of trials in which E has happened / Total number of trials

3. P (H) = Number of heads / Total number of trials

P (H) = 45/ 100 = 0.45

P (T) = Number of tails / Total number of trials

P (T) = 55/ 100 = 0.55

4. 0.53

5. ½

6. Experimental probability

7.1/3

8. ½

9. 3/7

10. Number of ace cards = 4

P (A) = 4/52 = 1/ 13

11. 1.2 (Probability of any event cannot be more than 1)

12. Zero

13. One

14. One

15. Trial