[" 7.If "A sube B" then prove that "],[qquad (A times B)nn(B times A)=A^(2)]

If A sube B then prove that (A xx B)nn(B xx A)=A^(2)

sube B, then prove that AxxA sube (AxxB) nn (BxxA).

If A sube B , prove that AxxA sube (A xxB) nn (BxxA) .

If X=A nn B then prove that X xx X=(A xx A)nn(B xx B)

If A nn C=phi, then prove that (A xx B)nn(C xx B)=phi

(i) If A sube B , prove that A xx A sube (A xx B) nn (B xx A) (ii) If A sube B , prove that A xx C sube B xx C for any set C.

Show that If A sube B then A nn B=A

" If "A={1,2,3},B={2,3,4}" ,then "|(A times B)|nn(B times A)|=?

If A sube B, show that A xxbar(A)sube(A xx B)nn(B xx A)

If A sube B and C sube D , then prove that: A xx C sube B xx D