Question

there are 6 doors in hostel in how many ways can a student enter the hostel and leave by different door ​

Answer 1

Step-by-step explanation:

You can enter through 6 ways. But you can exit from 30 ways. Because when you enter from 1 way 5 ways are open to exit everytime. So for 6 doors you can enter 6 times and you can exit 6X5=30 times

Answer 2

Answer:

You can enter through 6 way.

But you can exit from 30 way.

1way 5 way are open to exist everytime.

So for 6 door you can enter 6 time and you can exit. 6*5=30