Lesson
Probabilities
Use the theoretical probabilit
y
formula to solve the problem. Express the probabilit
y
as a fraction
reduced to lowest terms.
1) A die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6}. Find the probability of
getting a 7.
2) A die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6}. Find the probability of
getting a 6.
3) You are dealt one card from a standard 52-card deck. Find the probability of being dealt a picture
card.
4) A single die is rolled twice. The set of 36 equally likely outcomes is {(1, 1), (1, 2), (1, 3), (1, 4), (1,
5), (1, 6), (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6), (3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6), (4, 1), (4,
2), (4, 3), (4, 4), (4, 5), (4, 6), (5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6), (6, 1), (6, 2), (6, 3), (6, 4), (6,
5), (6, 6),}. Find the probability of getting two numbers whose sum is less than 13.
5) Use the spinner below to answer the question. Assume that it is equally probable that the pointer
will land on any one of the five numbered spaces. If the pointer lands on a borderline, spin again.
Find the probability that the arrow will land on 3 or 4.
Prestatistics
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