Question

If U = {x | x ∈ N, x < 10} and A = {x | x ∈ N, 2 ≤ x < 6} then (A’)’ is

Options

• {1, 6, 7, 8, 9}

• {1, 2, 3, 4}

• {2, 3, 4, 5}

• { }

Answer 1

{2, 3, 4, 5}

Explanation;

Hint:

U = {1, 2, 3, 4, 5, 6, 7, 8, 9}

A = {2, 3, 4, 5}, A’ = {1, 6, 7, 8, 9}

(A’)’ = U – A

(A’)’ = {2, 3, 4, 5}