4.1.3 - Formulae Summary
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Practice Questions
Test your understanding with targeted questions
What is the conditional probability formula?
💡 Hint: Remember it involves the joint probability divided by the probability of the condition.
Are two events independent if P(A|B) = P(A)?
💡 Hint: Consider if the occurrence of one affects the other.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the correct formula for conditional probability?
💡 Hint: Look for the formula that includes both events A and B.
True or False: If two events are independent, P(A|B) = P(A).
💡 Hint: Consider what independence means in probability terms.
1 more question available
Challenge Problems
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In a deck of cards, what is the probability of drawing a red card given that an ace has been drawn?
💡 Hint: Consider how many cards are left after one draw.
A bag contains 3 red and 2 blue marbles. If one is drawn and is known to be red, what is the probability of drawing a second red marble?
💡 Hint: Think about how many red marbles are left and total marbles remaining.
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