There are 4 copies of 5 different scales. In how many ways can they be arranged on a shelf?	Select the correct option
A) 20!/4!	B) 20!/5(4!)	C) 20!/(4!)^5	D) 20!	E) 5!
There are 4 copies of 5 different scales.20!/((4!)^5)   Answer - 20!/(4!)^5
<result>C</result>
There are 4 copies of 5 different scales. In how many ways can they be arranged on a shelf?