Question: For n Z+, let U = {1, 2, 3, ... , n}. Define the relation R on P(U) by A R B if A

For n ∈ Z+, let U = {1, 2, 3, ... , n}. Define the relation R on P(U) by A R B if A ⊆ B and B ⊆ A. How many ordered pairs are there in this relation?

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Since U n PU 2 n and so there are 2 n 2 n 4 n ordered pairs of the form A B where A B U Fr... View full answer

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