document.write( "Question 844909: A bag contains 6 red, 3 black and 6 white balls. A ball is selected at random from the bag.
\n" ); document.write( "Find the probability that the selected ball is :
\n" ); document.write( "(a) red or black
\n" ); document.write( "(b) not black \n" ); document.write( "

Algebra.Com's Answer #509013 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
a) $\"P%28R%29=6%2F%286%2B3%2B6%29=6%2F15=2%2F5\"$
\n" ); document.write( " $\"P%28B%29=3%2F15=1%2F5\"$
\n" ); document.write( " $\"P%28R+or+B%29=P%28R%29%2BP%28B%29=2%2F5%2B1%2F5=3%2F5\"$
\n" ); document.write( "b)
\n" ); document.write( " $\"P%28-B%29=1-P%28B%29=1-1%2F5=4%2F5\"$
\n" ); document.write( " \n" ); document.write( "

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