Relation R is reflexive and transitive but not symmetric, R defined as R = {(a, b) : a ≤ b}

Show that the relation R in R defined as R = {(a, b) : a ≤ b}, is reflexive and transitive but not symmetric.

[snehalmali]

find relation R from given set below A={1, 2, 3} and B={4, 5, 6} 1) R={(a, b)€R |a<=ab}
2) R={(a, b)€R | b is divisible by a}
3) {(a, b)€ R | a=b}
4) {(a, b)€R | b=a+b}
What is the ans. Of this qun. EXPLAIN plzz

[krishp]

I don't understand why you write 2>1 in symmetric relation

[girishbr]

Thanks sir it is so much help for me thank u sir