There are 15 bulbs in a room. Each one of them can be operated independently . The number of ways in which the room can be lighted is

There are 10 bulbs in a room. Each one of them can be operated independently . Find the number of ways in which the room can be illuminated .

There are 10 bulbs in a room . Each one of them can be operated independently. Find the number of ways in which the room can be illuminated.

There are 10 bulbs in a room. Each one of them can be operated indipendently. Find the number of ways in which the room can be illuminated I is.

There are 5 bulbs in a room. Each one of them can be operated independently. Then the no. of ways in which the room is illuminated I is:

There are 10 lamps in a hall . Each one of them can be switched on independently . The number of ways in which the be illuminated is

There are 10 lamps in a hall. Each one of them can be switched on independently. The number of ways in which the hall can be illuminated is

There are 8 lamps in a hall. Each one of them can be switched on independently. The number of ways in which the hall can be illuminated is