Question

In a five-storeyed mansion, there are 18 rooms on each floor and in every room there are twenty switches.
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Answer 1

Total no .of rooms = 18 * 5 = 90 rooms

so ,

No.of.Switches = 20*90 = 1800 switches

Answer 2

Answer:

4 ,1/2

Step-by-step explanation:

18 x 5 divided by 20