If `M sube N` , then find `M nn N `

If X sube Y, then (X nn Y) nn X =

If M sube N, then (M uu N) uu (M nn N) =

N nn W =

Choose the correct alternative answer for each of the following questions : If P sube M , then which of the following set represent P nn (P uu M) ?

If n(A) = 5, n(B) = 6 and n(A uu B) = 11, then find n(A nn B).

If n(A) = 20, n(A uu B) = 36, n(B) = 28 then find n(A nn B) .

If M is any set, then write M uu phi and M nn phi

If M = {x | x is a multiple of 5} : N = {x | x is a multiple of 7}, then M n N =

If 5m-n =3m +4n , then find the values of the following expression: (3m+4n)/(3m-4n)