document.write( "Question 1065618: In a box of markers there are eight which have dried up and will not write. The box contains 15 red, 15 purple, 5 black and 10 white markers. A marker is picked at random from the box.
\n" ); document.write( "Find the probability that\r
\n" ); document.write( "\n" ); document.write( "a) it is red
\n" ); document.write( "b) it is not black
\n" ); document.write( "c) it is purple or white
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Algebra.Com's Answer #680805 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"P%28R%29=15%2F%2815%2B15%2B5%2B10%29=15%2F45=1%2F3\"
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\n" ); document.write( "First find the probability that it is black,
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\n" ); document.write( "So the probability that it is not black is the complement,
\n" ); document.write( "\"P=1-1%2F9\"
\n" ); document.write( "\"P=8%2F9\"
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\n" ); document.write( "\"P=P%28P%29%2BP%28W%29\"
\n" ); document.write( "\"P=15%2F45%2B10%2F45\"
\n" ); document.write( "\"P=25%2F45\"
\n" ); document.write( "\"P=5%2F9\"
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