Relations Test ...

If $$A=\{b,c,d\}$$ and $$B=\{x,y\}$$. Find which of the following are elements of $$A \times A$$.

n(A)=m and n(B)=n ; then

$$\left (A \cap B  \right ) \times C$$

Given $$M=\{5,6,7\}$$ and $$N=\{6,8,10\}$$ find element of $$(M\cup N)\times N$$

Given $$A=\{b,c,d\}$$ and  $$B=\{x,y\}$$ : find element of  $$A\times B$$ .

$$n(A)=4 $$ and  $$n(B) =5$$: $$n(A \times B)=$$

n (A $$\times$$ B) =

Which one of the statement is false ?

R is a relation in A and (a, b) $$\notin$$ r, implies (b, a) $$\notin$$ R then R is said to be ____ relation