mygreenblankee mygreenblankee

27-03-2018
Mathematics

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you have a jar of marbles. There are 15 red, 20 blue,7 green, and 18 red marbles. You choose one at random then replace it and choose another. What is the probability of both being blue?

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kenziemaselka kenziemaselka

27-03-2018

1 out of 3 chance.
20 out of 60 marbles are blue.
20/60 = 1/3

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27-03-2018

The probability of blue is 20/60
2 blue would be (20/60)(20/60) which is .1111

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