document.write( "Question 1148152: A committee of three people is selected at random from a set consisting of seven teachers, three parents of students, and six alumni.\r
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Algebra.Com's Answer #769510 by ikleyn(52800) $\"\"$ $\"About$

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document.write( "(a)  The total set has 7+3+6 = 16 persons.\r\n" );
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document.write( "     The probability to select a teacher at the 1-st selection is  ;\r\n" );
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document.write( "     The probability to select a teacher at the 2-nd selection is  ;\r\n" );
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document.write( "     The probability to select a teacher at the 3-rd selection is  .\r\n" );
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document.write( "     Therefore, the answer to (a) is  the product  ...\r\n" );
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document.write( "     You compute it.\r\n" );
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document.write( "(b)  By analogy, \r\n" );
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document.write( "          The probability to select no teacher at the 1-st selection is  ,    (where 9 = 3 + 6)\r\n" );
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document.write( "          The probability to select no teacher at the 2-nd selection is  ;\r\n" );
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document.write( "          The probability to select no teacher at the 3-rd selection is  .\r\n" );
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document.write( "     Again, you compute it.\r\n" );
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