A room has 4 doors In how many ways a man can enter into the room and will come - Maths - Permutations and Combinations

Question

A room has 4 doors In how many ways a man can enter into the room
and will come out in different room

Lovina Kansal · Accepted Answer

Dear student
Clearly, a person can enter the room through any one of these threeways of entrance, he can come out through any one of the remaining two doors
Hence the number of ways in which a man can enter a room through one door and come out through a different door=3×2=6 ways
Regards

A room has 4 doors. In how many ways a man can enter into the room and will come out in different room