document.write( "Question 594458: how many ways can you make it a sandwich by choosing 4 of 10 ingredients \n" ); document.write( "
Algebra.Com's Answer #376890 by Alan3354(69443)\"\" \"About 
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how many ways can you make it a sandwich by choosing 4 of 10 ingredients
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\n" ); document.write( "If it's 4 different ingredients:
\n" ); document.write( "10*9*8*7 = 5040 ways
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\n" ); document.write( "But, ingred's ABCD is the same as ACDB, so divide by 4*3*2*1
\n" ); document.write( "--> 210 ways
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