Relations and F...

If $$A=\left \{x:x^2-3x+2=0\right \}$$ and $$B=\left \{x:x^2+4x-5=0\right \}$$ then the value of A-B is

If R={$$(x,y)/3x+2y=15$$ and x,y $$\displaystyle \epsilon $$ N}, the range of the relation R is________

If $$x$$ co-ordinate of a point is $$2$$ and $$y$$ co-ordinate is $$0$$, then ordered pair for its coordinate on $$XY$$ plane is

If $$(x+3, 4-y)=(1,7)$$, then $$(x-3, 4+y)$$ is equal to

An operation $$\displaystyle \theta $$ is defined by the equation
$$\displaystyle a\theta b=\frac { a-b }{ a+b } $$, for all numbers a and b such that $$\displaystyle a\neq -b$$. If  $$\displaystyle a\neq -c$$ and $$\displaystyle a\ \theta\  c = 0$$, then find the value of c.

Let $$R$$ be the relation in the set $$N$$ given by $$R=\left\{(a, b): a=b-2, b>6\right\}$$. Choose the correct answer.

If ordered pair $$(a, b)$$ is given as $$(-2, 0)$$, then $$a =$$

What are the ways of representing a relation?

If $$x$$ and $$y$$ coordinate of a point is $$(3, 10)$$, then the $$x$$ co-ordinate is