jee-advanced 2010 Q21

jee-advanced · India · paper2 Combinations & Selection Subset Counting with Set-Theoretic Conditions

Let $S = \{ 1,2,3,4 \}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to
A) 25
B) 34
C) 42
D) 41

Let $S = \{ 1,2,3,4 \}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to\\
A) 25\\
B) 34\\
C) 42\\
D) 41