Let A = {1, 2, 3, 4, 6}. Let R be the relation on A defined by R = {(a

1.	Let A = {1, 2, 3, 4, 6}. Let R be the relation on A defined by R = {(a, b) : a, b ∈ A, b is exactly divisible by a}.(i) Write R in roster form.(ii) Find the domain of R.(iii) Find the range of R.
Answer» R = {(1, 1) (1, 2), (1, 3), (1, 4), (1, 5), (1, 6), (2, 2), (2, 4), (2, 6), (3, 3) (3, 6), (4, 4), (6, 6)} Domain of R = {1, 2, 3, 4, 6} Range of R = {1, 2, 3, 4, 6}

Let A = {1, 2, 3, 4, 6}. Let R be the relation on A defined by R = {(a, b) : a, b ∈ A, b is exactly divisible by a}.(i) Write R in roster form.(ii) Find the domain of R.(iii) Find the range of R.

Answer»

R = {(1, 1) (1, 2), (1, 3), (1, 4), (1, 5), (1, 6), (2, 2), (2, 4), (2, 6), (3, 3) (3, 6), (4, 4), (6, 6)}

Domain of R = {1, 2, 3, 4, 6}

Range of R = {1, 2, 3, 4, 6}

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Let A = {1, 2, 3, 4, 6}. Let R be the relation on A defined by R = {(a, b) : a, b ∈ A, b is exactly divisible by a}.(i) Write R in roster form.(ii) Find the domain of R.(iii) Find the range of R.

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