Question

R = {(a, b) / b = a + 1, a ∈ Z, 0 < a < 5}. Find the Range of R.

Answer 1

R = {(a, b) / b = a + 1, a ∈ Z, 0 < a < 5}
∴ a = 1, 2, 3, 4
∴ b = 2, 3, 4, 5
∴ Range (R) = {2, 3, 4, 5}