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And - Event A and Event B, etc
CONCEPTS
Equation
• Probability of >1 events occurs = Probability Event A * Probability Event B , etc
Tips
• Always look for “and” in the question. These are and event probability problems.
PRACTICE PROBLEMS
Question 1 A box contains 6 identically sized, solid-colored balls. One ball is green, 2 are yellow and 3 are red. A ball is drawn at random and returned to the box, then a second ball is drawn at random. What is the probability that hte first ball is red and the second ball is green?
-- Answer -- 1/12
P(red) = 3/6
P(green) = 1/6
P(red) * P(green) = 3/6 * 1/6 = 3/36 = 1/12
ACT PRACTICE PROBLEMS
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