Find total number of words formed by arranging the letters in LALLO when:- 1)Two 'L' do not appear together. 2)Three 'L' do not appear together.
- First arranging two L such that they do not appear together,so total number of ways equals 1.
- Now arranging two other letters ,so total number of ways-2
- So total words formed =2.
- Same for the second part.
I doubt that my method of solving this is incorrect,plzz tell me how to approach these types of problems.