Question

A movie theater has 3 entrances and 4 exist in how many ways can a man entr and exist from theater

Answer 1

There are 4 ways available and 3 are entances.so 1 is exit.

Therefore

Exit=1

Entrance=3

Answer 2

First, lets talk about entrances.

There are three doors from where he can enter. He has 3 options so he can enter from 3 different ways

There are 4 exit doors from where he can exit. He has 4 options so he can exit from 4 different ways.

As mentioned enter AND exit

Applying multiplication principle.

4 x 3 = 12 ways he can enter and exit a theater.

Hope he liked the movie ;)