Let \mathrm{S}=\{1,2,3,4\}. The total number of unordered pairs of | Filo
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Class 11

Math

Co-ordinate Geometry

Straight Lines

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

  1. 25
  2. 34
  3. 42
  4. 41
Correct Answer: Option(d)
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,
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