Question

There are 8 doors to a lecture room. The number of ways that a student can enter the room and leave it by a different door is 56.

• A. True
• B. False

Answer 1

The correct option is A True

A student can enter the room in 8 ways but he can leave the room in 7 ways.
The total number of ways in which this can be done = 8 $\times$ 7 = 56