Question

Which one is empty set ?
a) 0.
b) (null).
c) {x:x belongs to 1, (x-3)(x-5)}.
d) {x:x belongs to 1, (x-3)(x-5)}=0​

Answer 1

Step-by-step explanation:

Option (b) and (d) is correct.

Answer 2

Correct Option :

a] 0

Step-by-step explanation:

This contains has no element . When one defines a set via some characteristic property, it may be the case that there exist no elements with this property. If so, the set is empty.