Let \mathrm{S}=\{1,2,3,4\}. The total number of unordered pairs of | Filo

Class 11

Math

Co-ordinate Geometry

Straight Lines

548
150

Let . The total number of unordered pairs of disjoint subsets of is equal to

1. 25
2. 34
3. 42
4. 41
Solution: Given,

Each element can be put in ways either in subsets or we don't put in any subset.

Total number of unordered pairs of disjoint subsets,
548
150

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