Question

In a five storeyed mansion,

there are 18 room on each floor and in every room there are twenty switches how many switches are there in all the room of the building ​

Answer 1

Answer: 1800 switches

Step-by-step explanation:

Number of rooms= 18×5

                              =90 rooms

Number of switches in each room= 20

Number of switches in the all the rooms= 20×90

                                                                      =1800

∴There are 1800 switches in all the rooms

I hope this helped you (^_^)