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Questions and Answers
What is the probability of an event that is impossible?
If P(A)=0.3 what is P(not A)?
A fair six-sided die is rolled. What is the probability that the number is odd?
What is probability of a sure event?
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A coin is flipped. What is the probability that flip result in heads?
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Study Notes
Probability Basics
- The probability of an impossible event is 0.
Union of Events
- The maximum possible value of P(A ∪ B) is 0.7, given P(A) = 0.4 and P(B) = 0.3.
Probability of a Single Event
- The probability of rolling an odd number on a fair six-sided die is 1/2 or 0.5.
Independent Events
- If two events A and B are independent, P(A ∩ B) = P(A) × P(B).
- Given P(A) = 0.2 and P(B) = 0.5, P(A ∩ B) = 0.2 × 0.5 = 0.1.
Probability of Multiple Events
- The probability of both flips resulting in heads when a coin is flipped twice is (1/2) × (1/2) = 1/4 or 0.25.
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Description
Test your understanding of probability concepts with these questions on impossible events, union and intersection of events, independence, and coin flipping.
