Question

A huge building is to be decorated during Diwali. The building has 5 floors and each floor has 256 rooms. Each room has 3 windows and 2 doors .5 diyas are to be lit in each window and 2 diyas in each doors. How many diyas in all will be required?

Answer 1

first calculate the no of windows in total-
each  room= 3 windows
256 rooms= 768 windows
all windows in 5 floors= 768*5= 3840 windoows
total no of diyas for windows= 3840*5= 19200
second calculate the no of doors-
each room= 2 doors
256 rooms= 256*2= 512 doors
all doors in all 5 floors= 512*5= 2560 doors
total no of diyas for doors= 2560*2= 5120
total no of diyas= 19200+5120= 24310