Subset of countable set is. A. Not countable B. May be countable C. Always countable D. None View AnswerC. Always countable Related MCQs A⊆B means. {(a,b):a∈A and b ∈ B} represents. Which is true. X∪(X∩Y)=. There is set with no element. A set whose compliment is set itself. For two distinct numbers a,b if f(a)≠ f(b) then f is. f(x)= 4x-1 where f:R→R then f is. Set of all real numbers between 0 and 1 is. Set of all real numbers and set of real numbers between 0 and 1 have.