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Question
Given the sets, A = {1, 3, 5}, B = {2, 4, 6} and C = {0, 2, 4, 6, 8}, the following may be considered as universal set (s) for all the three sets A, B and C?
Φ
Solution
A ⊄ Φ, B ⊄ Φ, C ⊄ Φ
Φ is a set that contains no elements. So, it is not a universal set for A, B, and C.
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