Let X = {A, B, C, D}. What Is { A: A ∈ P(X) And |A| = 2 }?

1.	Let X = {A, B, C, D}. What Is { A: A ∈ P(X) And \|A\| = 2 }?
Answer» Let X = {A, B, C, D}. What Is { A: A ∈ P(X) And \|A\| = 2 }? Solution:

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