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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}
{ }
Solution
{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}
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