Probability: CBSE Test Paper
-1

1. The probability of getting bad egg in a lot of 400 is 0.035.Then find
the no. of bad eggs in the lot.

[ans.14]

2. Write the probability of a sure event.

[ans.1]

3. What is the probability of an impossible event.

[ans.0]

4. When a dice is thrown, then find the probability of getting an odd
number less than 3.

[ans.1/6]

5. A girl calculates that the probability of her winning the third prize
in a lottery is 0.08.If 6000 tickets are sold, how many ticket has she brought.
[Ans.480]

6. What is probability that a non-leap year selected at random will
contain 53 Sundays.

[Ans.1/7]

7. A bag contains 40 balls out of which some are red, some are blue and
remaining are black. If the probability of drawing a red ball is 11/20 and that
of black ball is 1/5, then what is the no. of black ball. [Ans.10]

8. Two coins are tossed simultaneously. Find the probability of getting
exactly one head.

[Ans 1/2]

9. A card is drawn from a well suffled deck of 52 cards. Find the
probability of getting an ace. [Ans.1/13]

10. In a lottery, there are 10 prizes and 25 blanks. Find the probability
of getting a prize.

[Ans. 2/7]

Probability: CBSE Test Paper
- 2

1. Find the
probability that a no. selected at random from the number 3,4,5,6,………..25 is
prime.

[Ans. 8/23]

2. A bag contains 5
red,4 blue and 3 green balls. A ball is taken out of the bag at random. Find
the probability that the selected ball is (a) of red colour (b) not of green
colour.

[Ans. 5/12, 3/4]

3. A card is drawn at random from a well-shuffled deck of playing cards.
Find the probability of drawing (a) A face card (b)card which is neither a king
nor a red card

[Ans.3/13, 6/13 ]

4. A dice is thrown once. What is the probability of getting a number
greater than 4?

[Ans. 1/3 ]

5. Two dice are thrown at the same time. Find the probability that the
sum of two numbers appearing on the top of the dice is more than 9.

[Ans. 1/6 ]

6. Two dice are thrown at the same time. Find the probability of getting
different numbers on both dice. [Ans. 5/6 ]

7. A coin is tossed two times. Find the probability of getting almost one
head.

[Ans.3/4]

8.
Cards with numbers 2 to 101 are placed
in a box. A card selected at random from the box. Find the probability that the
card which is selected has a number which is a perfect square. [Ans.9/100 ]

9. Find the probability of getting the letter M in the word
“MATHEMATICS”. [Ans.2/11]

10. Three unbiased
coins are tossed together. Find the probability of getting all heads [Ans.1/8]

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