document.write( "Question 639088: On a table, there are 50 good pens and 10 defective pens. In how many ways can 25 pens be selected so that exactly 3 are defective? \n" ); document.write( "
Algebra.Com's Answer #402545 by Edwin McCravy(20055)\"\" \"About 
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On a table, there are 50 good pens and 10 defective pens. In how many ways can 25 pens be selected so that exactly 3 are defective?
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document.write( "\"50 choose 22\" TIMES \"10 choose 3\" = C(50,22)×C(10,3) = 1.065 × 1016\r\n" );
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document.write( "Edwin
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