SOLUTION: An urn contains 4 purple marbles and 3 pink ones. Two marbles are drawn from the urn. what is the probability that both marbles are purble Without Replacement Sorry the question

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Question 327496: An urn contains 4 purple marbles and 3 pink ones. Two marbles are drawn from the urn. what is the probability that both marbles are purble Without Replacement
Sorry the question i just posted was incorrect This is the correct one
Thanks,
Oskar :o)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
P(2 purple) = ( (# of purple on first draw)/(# of marbles total on first draw) ) * ( (# of purple on second draw)/(# of marbles total on second draw) )


P(2 purple) = (4/7)*(3/6) = (4*3)/(7*6) = 12/42 = 2/7

Note: there are 4 purple + 3 pink = 7 total marbles


So the odds are 2/7 (which in decimal form is about 0.2857) or about a 28.57% chance.