# CBSE Worksheet for chapter-13 Probability class 9

## Find CBSE Worksheet for chapter-13 Probability class 9

CLASS-9

BOARD: CBSE

Mathematic Worksheet - 13

TOPIC: Probability

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#### OBJECTIVE

1. 3 coins are tossed simultaneously .The probability of getting at least 2 heads is
1. 3/10
2. 3/4
3. 3/8
4. 1/2
2. Two cards are drawn successively with replacement from a pack of 52 cards. The probability of drawing two aces is
1. 1/169
2. 1/221
3. 1/265
4. 4/663
3. Two cards are drawn from a pack of 52 cards. The probability that both are spade is
1. 1/26
2. 1/4
3. 1/17
4. none of these
4. If the odds in favor of an event be 3:5 then the probability of non happening of the event is
1. 3/5
2. 5/3
3. 3/8
4. 5/8
5. If three coins are simultaneously tossed, compute the probability of 2 heads coming up
1. (3 )/8
2. 1/4
3. 5/8
4. 3/4
6. A coin is tossed successively three times. The probability of getting one head or two heads is
1. 2/3
2. 3/4
3. 4/9
4. 1/9
7. One card is drawn from a pack of 52 cards. What is the probability that the drawn card is either red or king
1. 15/26
2. 1/2
3. 7/13
4. 17/32

#### SUBJECTIVE

1. Two dice are thrown together. Find the probability of getting a total of 9.
2. A dice is thrown repeatedly until a six comes up. What is the sample space for this experiment ?
3. On a simultaneous toss of three coins find the probability of getting
1. At least 2 heads
2. iAt most 2 heads
3. Exactly 2 heads
4. A coin is tossed 80 times with the following outcomes
Find the probability of each event.
2. Tail: 45
5. In cricket match a batsman hits a boundary 10 times out of 36 balls he plays. Find the probability that he did not hit the boundary.
6. A bag which contains 7 blue marbles 4 black marbles and 9 white marbles. A marble is drawn at random from the bag then what is the probability that the drawn marble is
1. blue
2. white or black
7. Cards, marked with no. 2 to 101 are placed in a box and mixed thoroughly One card is drawn from his box find the probability that the number on card is
1. An even no.
2. A no. less than 14
3. A no. which is a perfect square.
4. A prime number less than 20.
8. An urn contains 6 oranges, 7 apples, 11 mangoes. A fruit is drawn at random what is the probability of drawing
1. An orange
2. Not apple
3. An apple or mango.
9. A card is drawn at random from a well shuffled desk of playing cards. Find the probability that the card drawn is
1. A card of spade or an ace
2. A red king
3. Neither a king nor a queen
4. Either a king or a queen

### Solutions: to worksheet-13 Topic-Probability

1. d
2. a
3. c
4. d
5. a
6. b
7. c

#### Subjective:

1. 1/9
2. {6,(1,6)(2,6)(3,6)(4,6)(5,6)(1,1,6)(1,2,6)…}
3. 1/2
1. 7/19
2. 9/16
4. 13/18
1. 7/20
2. 13/20
1. 1/2
2. 3/25
3.
4. 2/25
1. 1/4
2. 17/24
3. 3/4
1. 4/13
2. 1/26
3. 11/13
4. 2/13