Question

A= {X ∈ N / 1 < X ≤ 7 }

B= {X ∈ N / 4 ≤ X ≤ 8 }

C= {X ∈ N / 3 < X ≤ 6}

Answer 1

A={ 2,3,4,5,6,7}
B={4,5,6,7,8}
C={4,5,6}