Question

Write the following sets in Set builder form.

1. A = {3, 6, 9, 12}

2. B = {2, 4, 8, 16, 32}

3. C = {12,23,34,45,56,67}

4. D = {5, 25, 125, 625}

5. E = {2, 4, 6……..} (1 score each)

Answer 1

1. A = {x: x = 3ⁿ, n ∈ N, n < 4 }

2. B = {x: x = 2ⁿ; n ∈ N; n < 5 }

3. C = {x: x = \(\frac{n}{n+1}\); n ∈ N, n ≤ 6}

4. D = {x: x = 5ⁿ; n ∈ N, n ≤ 4 }

5. E = {x: x is an even number}