document.write( "Question 820417: Of 19 books, you plan to take 4 with you on vacation. How many different collections of 4books can you take? \n" ); document.write( "
Algebra.Com's Answer #493531 by richwmiller(17219)\"\" \"About 
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You can only take one but you can select from
\n" ); document.write( "19*18*17*16
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