: Let U = {x|x ∈ Z
+ ∧ x ≤ 30}, A = {y|y ∈ P ∧ 15 < y < 35}, B = {z|x ∈ E ∧ x ≤ Z
+} and
C = {w|w ∈ N ∧ 13 ≤ w ≤ 30} then Show that:
5. 5. A′, B′, C′, U′, ϕ′
6. Verify De Morgan’s Law.
7. How many elements are there in power set of U, A, B and C.
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