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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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