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WorksheetsProbability
Total questions: 10
Worksheet time: 3mins
1. Which of these is a simple event?
A. picking a red and yellow ball
B. draw a king and a diamond
C. roll a die and get a 2
D. get an average of 90 and rank first in school
2. The following are compound events EXCEPT ________.
A. rolling an even number less than 5 on a die
B. drawing a red ace from a deck of cards
C. tossing three coins and getting at least 2 heads
D. the team winning a match
3. In rolling a die, getting an odd number or a multiple of two. What is A ∪ B?
A. {1,2,3,4,5,6}
B. {1,2,3}
C. {1,2}
D. {2}
4. Which of the following is NOT a union of events?
A. rolling a die and get a 2 or an even number
B. picking a black or a face card
C. tossing a coin
D. spinning a numbered wheel cart from 1-10 and getting a 5 or a number divisible by 2
5. Which of the following is an intersection of events?
A. picking a black or a face card
B. spinning a numbered wheel cart from 1-10 and getting an 8 or a number divisible by 2
C. tossing a coin and getting a head
D. rolling a die and get a 2 or an even number
6. How many distinct ways can you keep four different books in a book shelf?
A. 4
B. 12
C. 24
D. 120
7. What is the probability of getting a two or five in a roll of fair die? Express your final answer in lowest terms.
A. 41
B. 31
C. 21
D. 51
8. The probability of union of two events is given by _____
A. P(A ∪ B) = P(A)+ P(B)
B. P(A ∪ B) = P(A)− P(B)
C. P(A ∪ B) = P(A)+ P(B) − P(A ∩ B)
D. P(A ∪ B) = P(A)− P(B) − P(A ∩ B)
9. What is the probability of landing a head in a single toss of a fair coin?
A. 0
B. 21
C. 1
D. 2
10. It refers to an event that involves two or more simple events.
A. Compound Events
B. Exclusive Event
C. Mutually Exclusive Event
D. Special Event
