Mathematics · Set Theory and Relations
Let A be a set with 'n' distinct elements. How many relations defined on set A are both reflexive and symmetric?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12(n×k)/2 where k = n
- 22k - (n×k)/2 where k = n2
- 32(n×k)/2 where k = n2
- 42(n×k)/2 where k = n - 1✓
Correct answer
2(n×k)/2 where k = n - 1
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