document.write( "Question 1201360: A box contains 300 discs of different colours. There are 100 pink discs, 100 blue discs and 100 orange
\n" ); document.write( "discs. The discs of each colour are numbered from 0 to 99. Five discs are selected at random, one at
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\n" ); document.write( "(i) the probability that no orange discs are selected \n" ); document.write( "

Algebra.Com's Answer #835679 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "A box contains 300 discs of different colours.
\n" ); document.write( "There are 100 pink discs, 100 blue discs and 100 orange discs.
\n" ); document.write( "The discs of each colour are numbered from 0 to 99.
\n" ); document.write( "Five discs are selected at random, one at a time, with replacement. Find
\n" ); document.write( "(i) the probability that no orange discs are selected
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document.write( "The fact that the experiment is repeated with replacement means that every time \r\n" );
document.write( "the initial conditions remain the same.\r\n" );
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document.write( "Therefore, in each selection of every of 5 discs, the probability that \r\n" );
document.write( "no orange discs are selected is   = .\r\n" );
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document.write( "Therefore, the probability that no orange discs are selected in all 5 selections is\r\n" );
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document.write( "     =  =  = 0.131687243,  or  0.1317 (rounded).    ANSWER\r\n" );
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