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Find out the number of unordered pairs of (A, B)

Source: MTRP 2015 Class 11-Multiple Choice Question: Problem 11 :-

September 21, 2020
Setsalgebra

Problem Statement

S={1,2,…,6}.S=\{1,2, \ldots, 6\} . Then find out the number of unordered pairs of (A,B)(A, B) such that A,B⊆SA, B \subseteq S and A∩B=ϕA \cap B=\phi
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