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Question
Given universal set = {x ∈ Z : -6 < x ≤ 6}. P = {x : x is a non-positive number}. Find: P'
Solution
Universal set = {x ∈ Z : -6 < x ≤ 6}
= {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6}
P = {x : x is a non-positive number}
= (-5, -4, -3, -2, -1}
P' = {1, 2, 3, 4, 5, 6}
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