Asked by thomas
a box contains seven red marbles, five green marbles & eight blue marble. a marble is drawn at random & is replaced. a second marble is then drawn from ther jar. find the probabilty that the first marble is red & second is green
Answers
Answered by
Reiny
prob(red, then green)
= (7/20)(5/20)
= 35/400
= 7/80
= (7/20)(5/20)
= 35/400
= 7/80
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