shenice1 shenice1

09-09-2016
Mathematics

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John has 3 red markers and 5 blue markers. What is the probability that he picks a red marker, and then, without replacing it, selects another red marker?

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Аноним Аноним

09-09-2016

first time he picks a marker there is a 3/8 chance because 3 markers out of all the markers.

second time there is a 2/7 chance because there are only 7 markers left and 2 markers of those are red

so it would be 3/8 times 2/7 or about .107

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