Q. How many relations are there on a set with n elements that are symmetric and a set with n elements that are reflexive and symmetric? (Solved)
1. 2n(n+1)/2 and 2n.3n(n–1)/2
2. 3n(n–1)/2 and 2n(n–1)
3. 2n(n+1)/2 and 3n(n–1)/2
4. 2n(n+1)/2 and 2n(n–1)/2
- d. 2n(n+1)/2 and 2n(n–1)/2