When are two events said to be equally likely?
Correct answer C. When each is as likely to occur as the other
Topic / 47 questions
Probability MCQs
Page 2 of Probability multiple-choice questions with answers. Tap an option to check yourself.
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What is the probability of getting a head when a fair coin is tossed?
Correct answer D. 1/2
What name is given to events where the occurrence of one rules out the occurrence of the other?
Correct answer B. Mutually exclusive
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For two mutually exclusive events, what does the addition law of probability state?
Correct answer D. P(A∪B) = P(A) + P(B)
What are events called when each of them has the same chance of occurring?
Correct answer D. Equally likely events
When a fair coin is tossed, what is the probability of getting any one particular outcome, such as heads?
Correct answer D. 50%
What term describes events that can occur together without either one influencing the other?
Correct answer A. Independent events
Which items are described as exhaustive when, taken together, they make up the whole sample space?
Correct answer B. Events
How many picture (face) cards are there in a standard pack of 52 playing cards?
Correct answer C. 12
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What is an event made up of just a single sample point called?
Correct answer C. Elementary event
Which value can the probability of an event never take?
Correct answer A. Negative
A card is drawn at random from a pack of 52. What is the probability that it is a picture card?
Correct answer B. 12/52
When a balanced die is rolled once, what is the probability of getting an even number?
Correct answer B. 3/6
A box holds 12 balls, 6 red and 6 white. If one ball is drawn at random, what is the probability that it is white?
Correct answer B. 6/12
When a fair die is rolled once, how many outcomes are there in the sample space?
Correct answer D. 6
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Two dice are thrown. What is the probability that the sum of the numbers is odd?
Correct answer B. 18/36
Three balanced coins are tossed once. What is the probability of getting exactly three tails?
Correct answer C. 1/8
Two balanced coins are tossed once. What is the probability of getting at least one head?
Correct answer D. 3/4
Given P(A|B) = 1/4 and P(A∩B) = 1/5, what is P(B)?
Correct answer D. 4/5
For a biased coin, P(H) = 2P(T). What is the probability of a head?
Correct answer C. 2/3