A fair six-sided die is rolled once. What is the probability of an even number? (Fraction in lowest terms.)
Probability
Counting, expectation, fair games.
A bag holds 3 red and 5 blue marbles. One is drawn at random. What is the probability it is red? (Fraction.)
Two fair coins are flipped. What is the probability both land heads? (Fraction.)
A spinner has 8 equal sections numbered 1–8. What is the probability of landing on a number greater than 6? (Fraction.)
Two fair six-sided dice are rolled. What is the probability the sum is 7? (Fraction in lowest terms.)
What is the probability of NOT rolling a 6 on one fair die? (Fraction.)
A bag has 4 red and 6 blue marbles. Two are drawn without replacement. What is the probability both are red? (Fraction in lowest terms.)
How many different arrangements are there of the letters in MATH?
How many ways are there to choose 3 students from a group of 10?
A fair coin is flipped 3 times. What is the probability of at least one head? (Fraction.)
What is the expected value of a single roll of a fair six-sided die? (Fraction.)
From 5 boys and 4 girls, two people are chosen at random. What is the probability both are girls? (Fraction.)
What is the expected number of heads in 10 flips of a fair coin?
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A fair coin is flipped 4 times. What is the expected number of times a flip differs from the one before it? (Fraction.)
Unlock with PremiumA fair coin is flipped 4 times. What is the probability of exactly 2 heads? (Fraction in lowest terms.)
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Three fair dice are rolled. What is the probability that all three show different numbers? (Fraction in lowest terms.)
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In how many ways can 4 letters be placed into 4 addressed envelopes so that no letter goes into its correct envelope?
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