Probability of a simple event: bags of marbles
Probability = number of favourable outcomes ÷ total outcomes. Write a fraction in lowest terms.
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A bag has 7 red and 5 blue marbles. One marble is picked at random. What is the probability that it is blue? Write a fraction in lowest terms.
Answer: 5/12
A bag has 6 red and 4 blue marbles. One marble is picked at random. What is the probability that it is blue? Write a fraction in lowest terms.
Answer: 2/5
A bag has 6 red and 2 blue marbles. One marble is picked at random. What is the probability that it is red? Write a fraction in lowest terms.
Answer: 3/4
Tip: Probability = number of favourable outcomes ÷ total outcomes. Write a fraction in lowest terms.
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