Online Test — Probability
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
medium
A coin is tossed. What is the probability of getting tails?
0
1/4
1/2
1
Explanation: Coin has 2 sides, tails is 1 out of 2
Question 2 of 10
medium
A die is rolled. What is the probability of getting an even number?
1/6
1/3
1/2
2/3
Explanation: Even numbers: 2,4,6 → 3/6 = 1/2
Question 3 of 10
medium
A card is drawn from a deck of 52 cards. What is P(queen)?
1/13
1/52
4/13
1/4
Explanation: 4 queens out of 52 = 4/52 = 1/13
Question 4 of 10
medium
If an event is impossible, its probability is:
0
0.5
1
-1
Explanation: Impossible events have probability 0
Question 5 of 10
medium
A bag has 5 red, 3 blue, 2 green balls. P(blue) = ?
1/5
3/10
1/3
2/5
Explanation: Total=10, blue=3 → 3/10
Question 6 of 10
medium
A coin is flipped 50 times, heads appears 28 times. Experimental P(heads) is:
0.5
0.56
0.44
0.28
Explanation: 28/50 = 0.56
Question 7 of 10
medium
The sum of probabilities of all elementary events is:
0
1
Depends
Infinite
Explanation: Total probability always sums to 1
Question 8 of 10
medium
A die is rolled. P(number < 3) = ?
1/6
1/3
1/2
2/3
Explanation: Numbers <3: 1,2 → 2/6 = 1/3
Question 9 of 10
medium
Which of the following cannot be a probability?
0.25
1.5
0
1
Explanation: Probability must be between 0 and 1
Question 10 of 10
medium
A spinner has 8 equal sections numbered 1-8. P(multiple of 3) = ?
1/4
3/8
1/2
5/8
Explanation: Multiples of 3: 3,6 → 2/8 = 1/4