an urn contains 7 white , 5 black and 3 red balls . two balls are drawn at rendom. find the probability that
1 both the balls are red
2. one ball is red and the other black
3. one ball is white

Dear Student,

Please find below the solution to the asked query:
1st partProbability that both the balls are white=C23C215=3105=0.028    Answer2nd partProbability that one ball is red and other one is black=3×5C215=15107=0.14   Answer3rd partProbability that one ball is whiteP=1-probability that none of ball is whiteP1SoP1=C28C215=28105=0.266So P=1-0.266=0.734     Answer

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sir please give answer
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