Question

In a sheet metal operation, three notches and four bends are required. if the operations can be done in any order, how many different ways of completing the manufacturing are possible?

Answer 1

For the answer to the question above, the 4 bends and 3 notches are indistinguishable, so each ordering can be rearranged in 4! * 3! ways by permuting the bends and notches, so the answer is
7!/(4!*3!)
in other words, there are 7 different ways to of completing the manufacturing.I hope my answer helped you.