Question

there are 12 doors in a hall. in how many ways can a person enter the hall through a door and leave it by a different door ?

Answer 1

Hey frnd here is ur answer..

12 ways because there are 12 doors in hall..

Hope this helps you... mark this answer as brinlist answer..

Answer 2

Answer:So the person can enter from any of the 12 doors but has 11 options to leave through another. So its 12*11

132 permutations.

Cheers