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Class 9 Probability

Total questions: 10

Worksheet time: 12mins

Name
Class
Date
1.

What is the probability of a sure event?

a)

0

b)

0.5

c)

1

d)

2

e)

None of these

2.

What is an event?

a)

Any outcome of an experiment

b)

Possible outcome of an experiment

c)

Impossible outcome of an experiment

d)

Any 1 outcome of an experiment

e)

0

3.

What is the total number of outcomes when 2 dices are rolled together?

a)

6

b)

24

c)

12

d)

18

e)

36

4.

What is the probability of getting a sum of 12 when a dice is rolled?

a)

2

b)

4

c)

1

d)

0

e)

6

5.

Which of the following is true?

a)

There are 4 aces in a deck of cards.

b)

There are 13 red clubs and 13 red hearts in a pack.

c)

There are 2 facecards in a pack

d)

There are 64 outcomes when 3 dices are thrown at once

e)

The joker card is a face card

6.

A coin was tossed 200 times. No. Of tail was 88. What is the probability of getting a head?

a)

 112÷200112\div200  

b)

 88÷20088\div200  

c)

 0.560.56  

d)

 00  

7.
What is the probability of spinning the spinner and landing on the 7?
a)
impossible
b)
equally likely 
c)
unlikely 
d)
very likely 
8.

Probability is ...

a)

the chance that some event will occur.

b)

a game that involves coins.

c)

a guarantee.

d)

A game that involves playing cards and tossing coins

e)

The chance of gambling

9.

The chart below represents the number of marbles in a jar.

P(green) =

a)

5/19

b)

10/28

c)

5/14

d)

14/19

10.
At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people.  If a person is selected at random, find the probability that the person is either a lifeguard or a manager.
a)
2/3
b)
8/15
c)
2/15
d)
not enough information