document.write( "Question 454589: A shipment of 10 television sets contains 3 defective sets. How many ways can a hospital purchase 4 of these sets and receive at least 2 of the defective sets? \n" ); document.write( "
Algebra.Com's Answer #312130 by edjones(8007)\"\" \"About 
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3 defective and 7 ok
\n" ); document.write( "(3C3 * 7C1) + (3C2 * 7C2)
\n" ); document.write( "=7+63
\n" ); document.write( "=70 ways
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