Question

please solve the question fast​

Answer 1

All the options are set except,3) brave childrens in a class.

Answer 2

1. Days in week = ( 7 days is equal to one week ) - ( Sunday , Monday ,....,Saturday)
2. months in year = ( 12 months in a year ) - (January ,February ,march ,........,December)
3. Brave children in the class = ( some children must be class )
4. First 10 counting number ( 1,2,3,4,5,6,7,8,9,10)
5. strong forts of Maharashtra
6. planets of the solar system - ( mercury ,Venus ,Earth ,......,Pluto )

Answer : options ( 1,2,4,6) these are set

Not set - 3 ,5 -

Because, The brave students count couldvariant from class to class ,so ,wouldn't say this is set

And

In Maharashtra forts ,in future further they will build a new fort ,then the count will increases ,are destroy the fort then the count will decrease