The total number of flags with three horizontal strips, in order that can be formed using 2 identica

Question

The total number of flags with three horizontal strips, in order that can be formed using 2 identical red, 2 identical green and 2 identical white strips, is equal to

Professor PC Thomas Classes · Answer

Select 3 colors from 3 available. Permutations of 3 distinct strips is $3! = 6$. Plus identical pairs logic leads to $4!$.