If A = {1,2,3} ; B = {2,3,5} A U B is _________ .
{1,2,3,4,5}
{1,2,3,5}
{1,2,3,2,3,5}
none of these
If n (A) = 42 , n (B) = 38, n (A U B ) = 70 then (A ∩ B ) is equal to _________ .
6
4
12
10
The disjoint sets in the following are _______ .
A={4,5,6,7} ;B = {1,2,3,4}
A = {a,b,c} ; B ={1,2,3}
A = {1,3,5} ; B = {5,3,1}
None of these
If = {1,2,3,4,5,6,7,8},A = {1,2,3,4} , B={2,4,5,7} and C={2,4,6,8}
Find B1.
{2,4,5,7}
{2,4,6,8}
{1,3,6,8}
{1,3,4,6,8}
Let A={2,3,4,6},B = {5,7,8} and C={2,7,8,9}.Find (A U B U C) ?
{ 2,3,4,5,7,8}
{2,3,4,5,6,7,8}
{2,3,4,5,6,7,8,9}
{2,5,7,8,9}
Find (A ∩ B)'
{1,3}
{2,4}
{1,3,5,6,7}
{1,3,5,6,7,8}
Write A = {x : xz,2x2+7x+3 = 0} in tabular form.
{2,3}
{-3}
{3}
{}
A,B and C are three sets ,n(A) = 14,n(C)=13,n(AUBUC) = 28,n(A)=n(B),n(A∩B)=7 n(A∩C)=3 Find n (A∩B∩C)
1
2
3
28
Let ={1,2,3.......10} A = {2,3,5,8,10}B= {3,5,9} and C={1,2,4,8,10}(A ∩ B)' =_______ .
{1,2,4,6}
{1,2,4,6,7,8,9,10}
{1,2,4,5,6,7,8}
Let ={1,2,3.......12} and A={4,6,8,10,12}
A ∩ A'=__________ .
ø
{1,2,3,4,5,7,11}
{1,5,7,9,11}
