Planning to take coaching on Unacademy
http://bit.ly/gate_unacademy
or
https://unacademy.com/
here is a code for 10% off PLUS1BPK1
Telegram Notification Group link:-
https://t.me/joinchat/X5egW_cvdt9kMGY1
Telegram discussion Group link:-
https://t.me/joinchat/VCyGUmVq8RNkMzhl
Downloads resources from here
https://education4fun.com/gate-cse/
Subjective
GATE CSE 1999
(a) Mr. X claims the following:If a relation R is both symmetric and transitive, then R is reflexive. For this, Mr. X offers the following proof."From xRy, using symmetry we get yRx. Now because R is transitive, xRy and yRx togethrer imply xRx. Therefore, R is reflextive."
Briefly point out the flaw in Mr. X' proof.(b) Give an example of a relation R which is symmetric and transitive but not reflexive.
