Two sets A and B are disjoint iff

Two sets A and B are not disjoint if :

If two sets A and B are disjoint, which none among the following is true?

Find whether the sets A and B are disjoint or overlapping sets : (i) A = { x | x is a letter in the word MODERN } and B = { x | x is a letter in the word MAYOR }

If set A and B are disjoint sets and n(A) = 6, n(B) = 5, then n(AuuB) =

If n(A)=8, n(B)=6 and the sets A and B are disjoint, then find n(A uu B) .

If n(A)=8 and n(B)=6 and the sets A and B are disjoint, then find n(AcupB) .

Two sets A and B are said to be disjoint if

A= {1, 2, 3, 4, 5, 6}, B= {7, 8, 9, 10, 11}" and " C= {6, 8, 10, 12, 14} . Show that A and B are disjoint sets but A and C are not disjoint sets.