DSE 2009

[TheFlash]

DSE 2009 Part 2 Ques. 6
Can anybody tell me the approach to this question?

[Daffodils]

No idea. Did you figure this out yet?

[TheFlash]

No. All I know that the answer is b)One.
Haven't figured out the logic.

[ecom]

I think only statement B is true( it's a property) , hence answer being one.

[Sachin Sehgal]

Statement B is the only True Statement.
https://math.stackexchange.com/questions/565694/suppose-r-is-a-relation-on-a-and-r-1-is-the-inverse-proof-or-counterex