Freight Train Cars In a train yard there are 7 tank cars, 12

Last updated: 7/19/2022

Freight Train Cars In a train yard there are 7 tank cars, 12 boxcars, and 12 flatcars. How many ways can a train be made up consisting of 4 tank cars, 5 boxcars, and 5 flatcars? (In this case, order is not important.) Total number of ways =