A relation `phi` from `CC "or" R R` is defined by `x phiy implies |x|`=y. which one is coR Rect ?

A relation phi from C to R is defined by x phi y hArr|x=y. Which one is correct?

Set A ={8,9,10} and B={2,3,4,5} and let R be a relation from A to B defined by xRy implies "y divides x " . Then the domain of R is

Let R be a relation on the set Z of all integers defined by:(x,y) in R implies(x-y) is divisible by n is eqivalence

Let R be a relation on the set Z of all integers defined by:(x,y) in R implies(x-y) is divisible by n.Prove that (b) (x,y) in R implies(y,x) in R for all x,y,z in Z .

A = {1, 2, 3, 4, 5}, B = {1, 3, 4} and the relation R from set A to set B where (x, y) in R implies x > y. Find the ordered pairs of R^(-1)

If R is a relation on Z (set of all integers) defined by x R y iff |x-y|le1 , then R is

If R is a relation on Z defined by xRy iff x divides y then R is

Each question in this section has four choices A , B, C , and D out of which only one is coR Rect. Mark your choices as follows . Let R be a relation on the set N N of the natural numbers defined by nRm ltimplies n is a factor of m. Then R is not symmetric because

Each question in this section has four choices A , B, C , and D out of which only one is coR Rect. Mark your choices as follows . Let R be a relation on the set N N of the natural numbers defined by nRm ltimplies n is a factor of m. Then R is transitive because

A relation R: ZrarrZ defined by R={(x,y)//y=x^(2)-1} is