CBSE Class 11 Probability Worksheet C

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1. We wish to choose one child of 2 boys and 3 girls. A coin is tossed. If it comes up heads, a boy is chosen, otherwise a girl is chosen. Describe the sample space.

2. What is the chance that a leap year, selected at random, will contain 53 Sundays?

3. If P (A) = 0.6, P(B) =0.4 and P (A∩ B) = 0, then the events are 

4. In general the prob. of an event lie between? 

5. A and B are two mutually exclusive events of an experiment. If P (not A) = 0.65, P (A∪B) = 0.65 and P (B) = K, find K

6. In a class XI of a school 40% of the students study mathematics and 30% study biology. 10% of the class study both mathematics and Biology. If a student is selected at random from the class, find the prob. that he will be studying mathematics or biology.

7. A hockey match is played from 3 pm to 5 pm. A man arrives late for the match what is the prob. that he misses the only goal of the match which is scored at the 20th mint of the match?

8. In a single throw of two dice, find the prob. that neither a doublet nor a total of 10 will appear.

9. In a town of 6000 people 1200, are over 50 yr. old and 2000 are females. It is known that 30% of the females are over 50 yr. what is the prob. that a randomly chosen individual from the town is either female or over 50 yr.

Click on link below to download CBSE Class 11 Probability Worksheet C.