SOLUTION: This is my question--From an urn containing 7 red and 4 green balls, in how many ways can we draw a set of 5 balls of which 3 are red and 2 are green?
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Question 74636: This is my question--From an urn containing 7 red and 4 green balls, in how many ways can we draw a set of 5 balls of which 3 are red and 2 are green? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! From an urn containing 7 red and 4 green balls, in how many ways can we draw a set of 5 balls of which 3 are red and 2 are green?
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# of ways to draw 3 red of 7 is 7C3= [7*6*5]/[1*2*3]= 35
# of ways to draw 2 green of 4 is 4C2=[4*3}/[1*2]=6
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# of ways to do both is 35*6 = 210 ways
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Cheers,
Stan H.
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