document.write( "Question 1088843: The urn held 4 black marbles, 3 red marbles, and 6 white marbles. If three marbles are drawn randomly and the first marble drawn is white, what is the probability that the second marble is red and the third marble is black?\r
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document.write( "a.) with replacement \r
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document.write( "b.) without replacement \n" );
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Algebra.Com's Answer #703316 by Boreal(15235) You can put this solution on YOUR website! With replacement there are 13 marbles \n" ); document.write( "The probability the first is white is 6/13 and the second red is 3/13 and the third black is 4/13 for a combined probability of 72/2197 \n" ); document.write( "Without replacement it is 6/13*3/12*4/11=72/1716 or 6/143. \n" ); document.write( " |