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All questions of Probability for Class 8 Exam
A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of randomly selecting a blue marble?- a)1/2
- b)3/10
- c)3/5
- d)2/5
Correct answer is option 'B'. Can you explain this answer?
a)
1/2
b)
3/10
c)
3/5
d)
2/5
 | Subset Academy answered |
There are 3 blue marbles out of a total of 10 marbles. So, the probability is 3/10.
If you roll a fair six-sided die, what is the probability of rolling a number greater than 4 or an even number?- a)1/2
- b)2/3
- c)3/4
- d)5/6
Correct answer is option 'B'. Can you explain this answer?
a)
1/2
b)
2/3
c)
3/4
d)
5/6
 | Edgy Education answered |
Numbers greater than 4: 5, 6 (2 numbers). Even numbers: 2, 4, 6 (3 numbers). Numbers greater than 4 or even = {2, 4, 5, 6}. Probability = 4/6 = 2/3.
A fair coin is flipped. What is the probability of getting tails?- a)1/2
- b)1/3
- c)2/3
- d)1/4
Correct answer is option 'A'. Can you explain this answer?
a)
1/2
b)
1/3
c)
2/3
d)
1/4
| | Subset Academy answered |
There are 2 equally likely outcomes (heads or tails). So, the probability of getting tails is 1/2.
In a class of 30 students, 20 play basketball and 15 play soccer. If 10 students play both sports, what is the probability that a randomly chosen student plays at least one of the sports?- a)1/2
- b)2/3
- c)3/4
- d)4/5
Correct answer is option 'C'. Can you explain this answer?
a)
1/2
b)
2/3
c)
3/4
d)
4/5
| | Edgy Education answered |
Total students playing at least one sport = (20 + 15 - 10) = 25. Probability = 25/30 = 5/6 = 3/4.
If a spinner is divided into 8 equal sections numbered 1 to 8, what is the probability of landing on a number greater than 5?- a)1/8
- b)3/8
- c)1/2
- d)5/8
Correct answer is option 'B'. Can you explain this answer?
a)
1/8
b)
3/8
c)
1/2
d)
5/8
 | Rahul Kumar answered |
There are 3 numbers (6, 7, 8) greater than 5 out of 8 total numbers. So, the probability is 3/8.
A jar contains 8 red balls and 4 blue balls. If one ball is drawn at random, what is the probability that it is not blue?- a)1/3
- b)2/3
- c)3/4
- d)3/8
Correct answer is option 'B'. Can you explain this answer?
a)
1/3
b)
2/3
c)
3/4
d)
3/8
| | Subset Academy answered |
Total balls = 8 + 4 = 12. Probability of not drawing a blue ball = 8/12 = 2/3.
What is the probability of rolling an even number on a fair six-sided die?- a)1/3
- b)1/6
- c)1/2
- d)2/3
Correct answer is option 'C'. Can you explain this answer?
a)
1/3
b)
1/6
c)
1/2
d)
2/3
| | Subset Academy answered |
There are 3 even numbers (2, 4, 6) out of 6 possible outcomes. So, the probability is 3/6 = 1/2.
A box contains 6 red balls and 4 green balls. If one ball is randomly chosen, what is the probability of choosing a red ball?- a)2/5
- b)3/5
- c)4/5
- d)1/2
Correct answer is option 'B'. Can you explain this answer?
a)
2/5
b)
3/5
c)
4/5
d)
1/2
 | Eduskill Classes answered |
There are 6 red balls out of 10 total balls. So, the probability is 6/10 = 3/5.
If you draw a card from a standard deck of 52 cards, what is the probability of drawing a heart?- a)1/4
- b)1/13
- c)1/2
- d)1/3
Correct answer is option 'A'. Can you explain this answer?
If you draw a card from a standard deck of 52 cards, what is the probability of drawing a heart?
a)
1/4
b)
1/13
c)
1/2
d)
1/3
 | Freak Artworks answered |
In a standard deck of 52 cards, there are 4 suits: hearts, diamonds, clubs, and spades. Each suit contains 13 cards.
The probability of drawing a heart can be calculated using the formula:
- Probability = Number of favourable outcomes / Total number of outcomes
Here, the number of favourable outcomes is the 13 hearts in the deck, and the total number of outcomes is the 52 cards.
So, the calculation is:
- Probability = 13 / 52
- This simplifies to 1 / 4.
Thus, the probability of drawing a heart is 1/4.
If you spin a spinner with 5 equal sections numbered 1 to 5, what is the probability of landing on an odd number?- a)1/5
- b)2/5
- c)3/5
- d)4/5
Correct answer is option 'C'. Can you explain this answer?
a)
1/5
b)
2/5
c)
3/5
d)
4/5
| | Rahul Kumar answered |
There are 3 odd numbers (1, 3, 5) out of 5 total numbers. So, the probability is 3/5.
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