document.write( "Question 623640: How many different sandwiches can you make if you can choose exactly three items out of seven?\r
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Algebra.Com's Answer #392312 by Alan3354(69443)\"\" \"About 
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How many different sandwiches can you make if you can choose exactly three items out of seven?
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\n" ); document.write( "If the 3 items are different, it's
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