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Probability Practice

Terms in this set (17)

2/15
There are some random cards in Sara's pocket: 4 jacks, 3 kings, 1 queen, and 2 aces. Sara reaches into her pocket without looking and picks two cards. What is the probability that Sara will pick two jacks if she does not replace the first card?
4/25
There are some random cards in Sara's pocket: 4 jacks, 3 kings, 1 queen, and 2 aces. Sara reaches into her pocket without looking and picks two cards. What is the probability that Sara will pick two jacks if she does replace the first card?
1/45
There are some random cards in Sara's pocket: 4 jacks, 3 kings, 1 queen, and 2 aces. Sara reaches into her pocket without looking and picks two cards. What is the P(Queen, Ace) if she does not replace the first card?
1/8
Three coins are tossed. What is P(3 heads)?
3/8
Three coins are tossed. What is P(exactly 1 Head)?
1/2
Three coins are tossed. What is P(1 or 0 Heads)?
1/81
A test has several multiple choice questions, each with 3 choices. If you guess blindly on 4 questions, what is the probability of getting all four correct?
1/16
A test has several multiple choice questions, each with 4 choices. If you guess blindly on 2 questions, what is the probability of getting both correct?
1/32
A test has several multiple choice questions, each with 2 choices. If you guess blindly on 5 questions, what is the probability of getting all five correct?
1/12
Danny and Linda are buying new curtains. They can choose between 2 styles (fluffy or straight) and 6 colors (beige, grey, white, brown, blue, or green). If they choose their curtains at random, what is P(fluffy, brown)?
1/6
Danny and Linda are buying new curtains. They can choose between 2 styles (fluffy or straight) and 6 colors (beige, grey, white, brown, blue, or green). If they choose their curtains at random, what is P(green)?
1/3
If you roll a fair six-sided die and a fair four-sided die, what is the probability that the dice add to 5 or 6?
1/24
If you roll a fair six-sided die and a fair four-sided die, what is the probability that the dice add to 10?
1/5
Milton has two doughnuts everyday - one for breakfast and one before bed. If there are 5 types of doughnuts to choose from (glazed, sprinkles, plain, jelly, and cream), what is the probability that his morning doughnut is the same as his bedtime doughnut?
9/25
Milton has two doughnuts everyday - one for breakfast and one before bed. If there are 5 types of doughnuts to choose from (glazed, sprinkles, plain, jelly, and cream), what is the probability that he has AT LEAST one jelly doughnut?
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