document.write( "Question 1187384: five defective electric toothbrushes were accedentally shipped to a drugstore by clean brush products along with 25 non-defective ones. \r
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document.write( "What is the pprobability that the first two toothbrushes are sold will be defective?\r
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document.write( "What is the probability the first two toothbrushes will not be defective? \n" );
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Algebra.Com's Answer #818331 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! probability of first is (5/30) and second given the first defective is (4/29). Product is 20/870=2/87. \n" ); document.write( "- \n" ); document.write( "(25/30)(24/29)=600/870=20/29 \n" ); document.write( " |