document.write( "Question 1200326: An urn contains 7 red marbles, 6 white marbles and 10 blue marbles. A child randomly selects three (without replacement).\r
\n" ); document.write( "\n" ); document.write( "Find the probability all have the same color.
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "Find the probability that none is white.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #834436 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "An urn contains 7 red marbles, 6 white marbles and 10 blue marbles.
\n" ); document.write( "A child randomly selects three (without replacement).\r
\n" ); document.write( "\n" ); document.write( "(a) Find the probability all have the same color.\r
\n" ); document.write( "\n" ); document.write( "(b) Find the probability that none is white.
\n" ); document.write( "~~~~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "(a)  Total possible triples   =  =  = 1771.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "     Triples of the same color  +  +  = 35 + 20 + 120 = 175.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "         P(a) =  = 0.09881  (rounded).    ANSWER\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "(b)  P(b) =  =  =  = 0.3840  (rounded).    ANSWER\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );