If `n(mu)` = 200 and n(`A' cap B)` = 120, then find `n(A cup B)`

If A and B are two sets such that n(A) = 17,n(B)=23 and n(A cup B) = 38 , then find n(A cap B) .

If A and B are two sets such that n(A) = 17,n(B)=23 and n(A cup B) = 38 , then find n(A cap B) .

If n(A) = 20 , n(B) = 30 and n(A cup B )=45 then find n(A cap B)

If n(A) = 35, n (B) = n(B) = 40 and n(A cup B) = 50, find n(A cap B) .

n(U)= 150, n(A)= 75, n(B)= 57, n(C )= 65, n(A cap B)=37, n(A cap C)= 36, n(B cap C)= 25" and "n(A cap B cap C)= 19 , then find n(A cup B cup C), and "n(A' cup B' cup C') .