document.write( "Question 1162752: 1) Adrian has 3 red, 4 blue, 2 white and a black marble in his basket. He randomly chooses a marble.
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Algebra.Com's Answer #786601 by ikleyn(52835) $\"\"$ $\"About$

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document.write( "In all, there are 3 + 4 + 2 + 1 = 10 marbles initially in the basket.\r\n" );
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document.write( "(a)  What is the probability that he chooses either a red or  the black marble?\r\n" );
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document.write( "     P = P(a read) + P(the black) =  +  =  = 0.4.\r\n" );
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document.write( "(b)  P = P(1st is a red)*P(2nd is a white) + P(1st is a white)*(P(2nd is a red) =  +  =  =  = .\r\n" );
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document.write( "(c)  I can not answer this question,\r\n" );
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document.write( "     because from the post, it is unclear, if it relates to choosing/pickaping one or two marbles.\r\n" );
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document.write( "     While experiment is described accurately in cases (a) and (b), it is not described accurately in case (c).\r\n" );
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