Question

A = { x : x ∈Z and x <5}. Is this set is finite or not?

Answer 1

no it is a infinite set

Answer 2

A={x:x € Z and x <5}.
So according to the question , It belongs to Z which Means elements can be an integer. and as given it is also less than 5.But there are infinite numbers which are less than 5. So it is not a finite set.
hope it helps !