" (iii) "A sub B rArr A nn B=A

For any two sets A and B, prove that A sub B rArr A nn B=A

If A and B are subsets of the universal set U, then slow that (i) A sub A uu B , (ii) A sub B hArr A uu B = B (iii) (A nn B) sub A

If A and B are subsets of the universal set U, then slow that (i) A sub A uu B , (ii) A sub B hArr A uu B = B (iii) (A nn B) sub A

Show that the following four conditions are equivalent: i) A sub B ii) A-B=phi iii) A uu B=B iv) A nn B= A

Show that the following four conditions are equivalent : (i) A sub B (ii) A -B = phi (iii) A uu B = B (iv) A nn B = A

Show that the following four conditions are equivalent: (i) quad A sub B (ii) A-B=phi (iii) A uu B=BA nn B=A

Prove the following : A sub B iff A nn B=A .

If A sub B, then (A'nn B')=?

Prove that (i) A nn B sube A( ii) A nn B sube B( iii) If C sube A and C subebar(B), then C sube A nn B( iv )A=B rArr A nn C=B nn C for any set C, (v) If B sube A, then A nn B=B and conversely.