Probability that a marble is NOT a certain colour
The marbles that are not that colour are all the rest. Write a fraction in lowest terms.
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A bag has 4 red, 5 blue and 6 green marbles. One marble is picked at random. What is the probability that it is NOT green? Write a fraction in lowest terms.
Answer: 3/5
A bag has 1 red, 9 blue and 3 green marbles. One marble is picked at random. What is the probability that it is NOT green? Write a fraction in lowest terms.
Answer: 10/13
A bag has 1 red, 7 blue and 7 green marbles. One marble is picked at random. What is the probability that it is NOT red? Write a fraction in lowest terms.
Answer: 14/15
Tip: The marbles that are not that colour are all the rest. Write a fraction in lowest terms.
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