[MCQ] Probability Class 9 Important Questions

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Probability Class 9 MCQ

1) The “Sum Of All Probabilities” is equal to

a. 4

b. 2

c. 3

d. 1

Answer: d

2. Three coins were tossed 200 times. The number of times 2 heads appeared is 72. As a result, the probability of 2 heads coming up is

a. 1/25

b. 9/25

c. 7/25

d. 2/25

Answer: b

3) A card is taken out from a well shuffled deck of 52 cards. What’s the probability of getting a king of the red suits?

a. 3/36

b. 1/16

c. 3/26

d. 1/26

Answer: b

4) A poll of 364 children age 19 to 36 months revealed that 91 of them enjoyed eating potato chips. The probability that a child chosen at random does not enjoy eating potato chips is
(a) 0.75
(b) 0.50
(c) 0.25
(d) 0.80

Answer: a

5) 16 cards with the numbers 1, 2, 3,…, 16 are contained within a bag. A random card is chosen. What is the probability that a given number can be divided by 3?
(a) 316
(b) 1316
(c) 1116
(d) 516

Answer: d

6) The sum of the probabilities of all events of a trial is
(a) less than 1
(b) greater than 1
(c) 1
(d) between 0 and 1

Answer: c

7) A & B throw a pair of dice. If A throws 9, then B has chance of throwing a huge number is

(a) 2/9
(b) 1/9
(c) 1/3
(d) 1/6

Answer: d

8) A die is thrown 300 times & odd numbers are obtained 153 times. Then, the probability of getting an even no. is

(a) 147/300
(b) 153/300
(c) 147/153
(d) 174/300

Answer: a

9) In a football match, a player hits Eight goals out of 60 balls. Find out the probability that the player did not hit the goal

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(a) 11/15
(b) 13/15
(c) 8/15
(d) 4/5

Answer: b

10) A bag contains 5 red balls & some grey balls. The probability of getting a blue ball is double that of a red ball. The no. of grey balls in the bag is

(a) 5
(b) 30
(c) 20
(d) 10

Answer: d

11) Getting a tail is an event with outcome ____

a) None

b) Head

c) Both a and b

d) Tail

Answer: d

12)  _____ is the set which includes all the events.

a) Sample space

b) A trial

c) An event

d) None

Answer: a

13) What is the probability of getting at least 3 heads when 3 coins are tossed simultaneously then

a) 1

b) 8

c) -1/8

d) 1/8

Answer: d

14) Three coins were tossed 200 times. The number of times 2 heads appeared is 72. As a result, the probability of 2 heads coming up is

(a) 9/25

(b) 2/25

(c) 7/25

(d) 1/25

Answer: a

15) If the probability of an event to happen is 0.3 and the probability of the event not happening is:

(a) 0.5

(b) 0.6

(c) 0.7

(d) None of the above

Answer: c

16) There are 4 yellow & 2 white balls in a basket. What is the probability of getting the white balls? 

(a) 1/2

(b) 1/6

(c) 1/5

(d) 1/3

Answer: d

17) Empirical probability is also called as- 

(a) Experimental probability

(b) Subjective probability

(c) Classic probability

(d) None of the above

Answer: a

18) The probability of the events lies between
(a) -1 ≤ p ≤ 1
(b) -1 < p ≤ 1
(c) -1 ≤ p ≤ 0
(d) 0 ≤ p ≤ 1

Answer: d

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19) Find the probability of a household earning more than 25000 per year & having 2 or more mobile set
(a) .1.1
(b) .3.3
(c) .245.245
(d) None of these

Answer: c

20) What is the probability of getting a queen from the deck of 52 cards?

a. 1/13

b. 1/52

c. 1/26

d. 3/52

Answer: a

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