A hall has 12 gates. In how many ways can a man enter the hall through one gate and come out through a different gate?

A hall has 10 gates. In how many ways can a man enter the hall through one gate and come out through a different gate ?

A hall has 10 gates. In how many ways can a man enter the hall through one gate and come out through a different gate ?

A Hall has 3 gates. In how many ways can a man enter the hall through one gate and come out through a different gate?

A room has 6 dorrs . In how many ways can a man enter the room through one door and come out through a different door ?

A room has 6 doors. In how many ways can a man enter the room through one door and come out through a different door?

A room has 8 doors. In how many ways can a man enter the room through one door and come out through a different door.

A room has 8 doors. In how many ways can a man enter the room through one door and come out through a different door.

A room has 6 doors.In how many ways can a man enter the room through one door and come out through a different door?

A hall has 9 doors. A person can enter the hall through any one of the 9 doors and come out through a different doors?

A hall has four entrances and five exits . In how many ways can a man enter and exit from the hall ?