Question: Say you re an electrical engineer designing an electromechanical subassembly for use in a larger aircraft system. Twelve components are to be stacked into a

Say youre an electrical engineer designing an electromechanical subassembly for
use in a larger aircraft system. Twelve components are to be stacked into a
cylindrical casing in a manner that minimizes the impact of shocks. One end of the
casing is designated as the bottom, and the other end is the top.
a. If all components are different, how many different design configurations
are possible?
b. If seven components are identical to one another, but the others are different, how
many different design configurations are possible?
c. If three components are of one type and identical to each other, and four components
are of another type and identical to each other, but the others are different, how many
different design configurations are possible?

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