document.write( "Question 550576: In a train yard, there are 12 flatcars, 10 tanker cars, 15 boxcars, and 5 livestock cars.
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\n" ); document.write( " B. How many ways can the train be made up if it is to have 30 cars? Is this a combination or permutation? C. How many trains can be formed with 3 livestock cars, 6 flatcars, 6 tanker cars, and 5 boxcars.
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Algebra.Com's Answer #358887 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
In a train yard, there are 12 flatcars, 10 tanker cars, 15 boxcars, and 5 livestock cars.
\n" ); document.write( "A. If the cars must be connected according to their final destination, how many ways can they be arranged.
\n" ); document.write( "Ans: 42!
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\n" ); document.write( "B. How many ways can the train be made up if it is to have 30 cars? Is this a combination or permutation?
\n" ); document.write( "Ans: Combinations 42C30 = 42!/(12!*30!)
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\n" ); document.write( "\n" ); document.write( " C. How many trains can be formed with 3 livestock cars, 6 flatcars, 6 tanker cars, and 5 boxcars.
\n" ); document.write( "Pick 3 livestock: 5C3
\n" ); document.write( "Pick 6 flatcars: 12C6
\n" ); document.write( "Pick 6 tankar cars:10C6
\n" ); document.write( "Pick 5 boxcars: 15C5
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\n" ); document.write( "Ans: Product of the numbers above.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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