Probability Class 8 Worksheet 1 with Answers
1. Write the
sample space when two coins are tossed. Find the probability of getting at
least one head.
2. Three
coins are tossed simultaneously. Find the probability of the event of getting
a. three heads
b. two heads and one tail
c. one head and two tails
d. three tails
3. In a pack
of cards, there are 52 cards. Find the probability of getting a red card.
4. There are 12 red, 8 green and 10 blue balls in a bag. One ball is
drawn at random. What is the probability that the ball drawn is a
a. red ball
b. green ball
c. not a green ball?
5. If two coins are tossed together, what is the probability of getting tails on both coins?
6. Find the
probability of getting a spade from a pack of 52 cards in a random experiment.
7. A bag contains 25 red, 30 yellow and 35 blue balls. A ball is
taken out of the bag at random. Find the probability that the ball taken out is
of
a. red colour
b. yellow colour
c. blue colour
8. A bag contains 16 pink balls, 14 green balls and 15 purple balls.
Find the probability of getting a purple ball.
9. A die is rolled. Find the probability of getting a number less
than 7.
10. There are 18 beads in a necklace with 5 green, 6 red, 3 black and 4
white beads. A bead is touched at random with eyes closed. Find the probability
of touching
a. a green bead
b. a red bead
c. a black bead
d. a green or red bead
Probability Class 8 Worksheet 2 with Answers
1. Write the
sample space when a die is thrown and find the probability of getting 2.
2. A die is rolled. Find the probability of getting
a. an even number
b. a prime number
c. a number less than 3
d. a number which is multiple of 3
3. A
letter is selected at random from the set of the English alphabets: A, B, C,
... Z.
a. Write
all the possible outcomes.
b. Let E
be the event that the letter selected precedes J. List all the possible
outcomes of this event.
c. Find P(E).
4. Three coins are tossed together. Find the probability of getting
a. three tails
b. no tail
c. at least one tail
d. two heads
5. An
octagonal die with letters A, B, C, D, D, E, C, A written on its faces is
rolled once. Find the probability that the letter turns up is
a. A b. D
c. E d. B
6.
In a box, there are 15 cards with numbers 1 to 15. A card is selected at random
from the box. Find the probability of getting
a. an even number
b. an odd number
c. a factor of 15
d. a composite number
7.
A bag contains 5 red, 10 black and 15 green balls. A ball is taken out at
random. Find the probability that the ball taken out is:
a. a red ball
b. a black ball
c. not a black ball
d. not a green ball.
8. A bag contains 8 white marbles, 7 red marbles and 5 blue marbles.
A marble is selected at random. What is the probability that the marble is not
of blue colour.
9. Chits with
numbers 11 to 50 are put in a box. A chit is drawn at random. Find the
probability of getting a chit with a number which is a multiple of 7.
10. A girl randomly picks a day every week to clean her room.
a. List
all the possible outcomes.
b. Let F
be the event that the day she picks begins with the letter ‘T’. List all the
possible outcomes of this event.
c. Find P(F).
ANSWERS
Worksheet 1
1. {HT, TH,
HH, TT}; ¾
2. a.
1/8 b. 3/8
c. 3/8 d. 1/8
3. ½
4. a.
2/5 b. 4/15
c. 11/15
5. ¼ 6. ¼
7. a.
5/18 b. 1/3
c. 7/18
8. 1/3 9. 1
10. a.
5/18 b. 1/3
c. 1/6 d. 11/18
Worksheet 2
1. {1, 2,
3, 4, 5, 6}; 1/6
2. a. ½ b. ½
c. 1/3 d. 1/3
3. a. {A, B, C, D, E, ... Z}
b. {A,
B, C, D, E, F, G, H, I}
c. 9/26
4. a.
1/8 b. 1/8
c. 7/8 d. 3/8
5. a. ¼ b. ¼
c. 1/8
d. 1/8
6. a. 2/5 b. 8/15
c. 4/15 d. 8/15
7. a.
1/6 b. 1/3
c. 2/3 d. ½
8. ¾
9. 3/20
10. a. {Mon,
Tue, Wed, Thu, Fri, Sat, Sun}
b. {Tue, Thu}
c. 2/7
MCQs Questions for Class 8 Maths
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| Maths Worksheets for Other Chapters of Class 8 |
1. Rational numbers class 8 worksheet
2. Exponents and powers class 8 worksheet
3. Squares and square roots class 8 worksheets
4. Cubes and cube roots class 8 worksheets
5. Playing with numbers class 8 worksheet
6. Algebraic expressions class 8 worksheet
7. Factorisation class 8 worksheet
8. Linear equations in one variable class 8 worksheet
9. Percentage class 8 worksheets
10. Compound interest class 8 worksheets
11. Direct and inverse proportions class 8 worksheets
12. Understanding quadrilaterals class 8 worksheets
13. Construction of quadrilaterals class 8 worksheet
14. Perimeter and area class 8 worksheets
15. Surface area and volume class 8 worksheets
16. Data handling class 8 worksheets
Some Extra Worksheets for ICSE Maths Class 8
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