SOLUTION: A bag contains 12 marbles of which 7 are white, 3 are black and the rest are red. A white marble is withdrawn. What is the probability that the next marble withdrawn is also white?

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Question 873937: A bag contains 12 marbles of which 7 are white, 3 are black and the rest are red. A white marble is withdrawn. What is the probability that the next marble withdrawn is also white?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
"A white marble is withdrawn", so we have 7-1 = 6 white marbles left out of 12-1 = 11.


So the probability of drawing another white marble is 6%2F11 (assuming no replacement is made).