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Question
Given the universal set = {x : x ∈ N and x < 20}, find:
C = {x : x is divisible by 4}
Solution
U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19}
∴ C = {x : x is divisible by 4}
C = {4, 8, 12, 16}
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