Understand The Rank Of Word And De-arrangement

Lesson 7 of 8 • 109 upvotes • 6:31 mins

This lesson focuses on the arrangement of alphabets in a word and deals with the approach in which the questions like this need to be handled. Surabhi has taken up an example and has looked into various cases for it. Thereby the lesson explains the concept of 'De-arrangement' and to make this concept clearer the educator has taken up an example and has depicted the application of the same. Watch out for some twists in the questions.