Free CBSE Class 9 Maths Probability Worksheets

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Sample CBSE Class 9 Maths Probability Worksheet Questions

1.

30 children were asked about the number of hours they watched TV programmes last week. The results are recorded as under.

Based on this information, the probability of a child chosen at random who watched TV for less than 5 hours.

1. 1/6 2. 1/5 3. 1/4 4. None of these
2.

Eleven bags of rice, each marked 5 kg actually contained the following weight of rice (in kg):

4.97, 5.05, 5.08, 5.03, 5.00, 5.06, 5.08, 4.98, 5.04, 5.07, 5.00


Find the probability that any one of these bags chosen at random contains less than 5 kg of rice?

1. 7/11 2. 9/11 3. 2/11 4. 4/11
3.

A survey was conducted among 10000 voters in UP about their favourite political part and following table shows the record:

Based on this information, the probability of a voter chosen at random whose favourite party is INC

1. 13/20 2. 3/20 3. 7/20 4. 9/20
4.

A survey was conducted among students about subject History and following table shows the record:

Based on this information, the probability of a student chosen at random who likes the subject is

1. 13/20 2. 11/20 3. 7/20 4. 9/20
5.

1000 families with 2 children were selected randomly this is shown in following table

Based on this information, the probability of a family chosen at random having at least one boy

1. 1/2 2. 1/8 3. 1/4 4. 3/4
6.

70 bulbs are selected at random from a lot and their life time (in hrs) is recorded in the form of a frequency table given below:

One bulb is selected at random from the lot. The probability that its life is 1150 hours, is

1. 1/20 2. 0 3. 1 4. 7/16
7.

Two coins are tossed 1000 times and the outcomes are recorded as below:

Based on this information, the probability for no head is

1. 1/2 2. 1/8 3. 1/4 4. 11/20
8.

In an organization, the following table represents the number of years of experiences of employees:

If an employee is selected at random. The probability that his/her experience is greater than 10 years.

1. 4/17 2. 8/17 3. 3/17 4. 7/17
9.

In a medical examination of students of a class, the following blood groups are recorded  follows :

If a student is selected at random from the class. The probability that he/she has blood group O, is

1. 1/2 2. 1/4 3. 1/8 4. 1/5
10.

A die is thrown 1000 times and the outcomes were recorded as follows :

If the die is thrown once more, then the probability that it shows 3 is

1. 1/20 2. 1/4 3. 1/3 4. 1/5

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