Which of the following is a singleton set.
Consider the following in respect of subsets of A and B of x :a, b, (AUB)c = Ac ∩ Bcc, A/B = B/A d, AUB = A∩B iff A = B . Which of these are correct.
(1 ) and (3 )
( 1 ) and (4 )
( 2 ) & (3 )
(2 ) & (4 )
( A U B )' = _________.
A' U B'
A' ∩ B'
(A ∩ B )'
A ∩ B '
If s = {x : x2 + 1 = 0 , x is real } then S is :
0
{ 0 }
{ Φ }
Φ
If n ( A ) = 8, n ( A ∩ B ) = 2, then n ( A - B) is equal to ________.
8
2
4
6
If A and B are any two sets, then A U B = ______.
Let A, B, C be any three non - empty sets. If AUB = AUC then which one of the following is definitely true ?
B = C
B C
C B
None of these
A set which is empty or having finite number of elements is a _________set.
Infinite
Finite
Singleton
None
If A = { x: x = 4n +1, 2 ≤ n ≤ 5 }, then number of subsets of A is ________.
16
15
These are 600 students in a school. If 400 of them can speak Telugu, 300 can speak Hindu, then the number of students when can speak both Telugu and Hindi is _______.
100
200
300
400
