Question

There are 6 entrances to the haunted house. If you do not exit the same way you entered, how many different ways can you enter and exit the house?
25
30
36

Answer 1

For 6 entrances, there are 6 exits. But, we cannot use the same path, so it becomes 5 exits.

\(\Large \color{purple}{\rightarrow 6 * 5 }\)
\(\Large \color{purple}{\rightarrow 30 }\)

30 is the answer.