document.write( "Question 248546: a bag has 2 red martbles 3 green marbles and 1 blue marble. if you randomly take out 2 marbles at once whats the probability of getting a blue and a green marble? \n" ); document.write( "
Algebra.Com's Answer #181145 by edjones(8007) You can put this solution on YOUR website! nCr=n!/((n-r)r!) Combination of n things taken r at a time. \n" ); document.write( ". \n" ); document.write( "2C6=15 all marbles \n" ); document.write( ". \n" ); document.write( "1C1=1 blue \n" ); document.write( "3C1=3 green \n" ); document.write( "2C0=1 red \n" ); document.write( ". \n" ); document.write( "(1*3*1)/15= 1/5 probability of getting a blue and a green. \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |