Operation on Se...

Which of the following is the empty set

Let n (⋃) = 700, n A = 200, n B = 300 and n (A ⋂ B) = 100, then n(A' ⋂ B')

If A and B are any two sets, then A ∪ (A ∪ B) is equal to ______

If A = {2, 4, 5}, B = {7, 8, 9}, then n (A × B) is equal to

Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {1, 2, 5}, B = {6, 7}, then A n B' is

If A and B are disjoint, then n(A ∪ B) is equal to

30 teachers of a school either teach mathematics or physics. 22 of them teach mathematics while 4 teach both the subjects. Then the number of teachers teaching physics only is _____

In a class of 100 students, 55 students have passed in Mathematics and 67 students have passed in Physics. Then the number of students who have passed in Physics only is _____

If A = {1, 2, 3, 4, 5}, B = {2, 4, 6}, C = {3, 4, 6},then (A ∪ B) ∩ C is ?___

If W is the set of all whole numbers and P is the set of all prime numbers and C is the set of all composite numbers, then W - (CUP) is equal to?.........