Question

That's from NTSE.........Class_10....

Answer 1

1.a
2.c these are answers.
Union includes observations of set a and Set B so the option is right in the first first one...
the second question is an IMD set and b is empty set so in empty set and a non empty set the intersection will be the empty set so the option is C

Answer 2

1) option B

2) option C