Chapter 1: Sets

Exercise

Question

Question: 1 (v)

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Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 4}, B = {2, 4, 6, 8} and C = {3, 4, 5, 6}. Find:

(v) (A')'

Answer

1
Find the elements of (A')' using the Double Complement Law.
Answer: {1, 2, 3, 4}
Reason: The double complement of a set is the set itself, i.e., (A')' = A
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