[" 12.If "A" and "B" are two disjoint sets,"],[" then "n(A uu B)" is equal to "]

If A and B are not disjoint sets, then n(A uu B)=

If A and B are two disjoint sets, then n(AcupB) is equal to:

If A and B are two disjoint sets then n(A cupB)=

If A and B are not disjoint sets then n(A cup B) is equal to

If A and B are two disjoint sets,then n(A uu B) is equal to n(A)+n(B) b.n(A)+n(B)-n(A nn B) c.n(A)+n(B)+n(A nn B) d.n(A)n(B)

If a and B are disjoint sets, then n(A uu B)= _______

If A and B are disjoint nonempty sets then A - (A - B) is equal to

If A and B are disjoint sets, then n(A cap B) = ?

If A and B are disjoint sets, then n(A cap B) = ?

IF A and B are disjoint sets then n (A cup B)= ……………..