If a finite set A has m elements, then the number of non-empty proper subsets of A is
2m
2m -1
2m-1
2(2m-1-1)
If X = {a,{b,c},d}. Which of the following is a subset of X
{a,b}
{b,c}
{c,d}
{a,d}
If n(X) = m, n(Y) = n and n(X∩Y) = p, then n(XY) =
m + n+ p
m + n - p
m - p
m - n + p
Given A and B are sets and A - B = A, then
A and B are disjoint sets
A and B are over lapping sets
B is a subset of A
A is the subset of B
The number of elements of the set{x : x Z, x2 = 1} is
3
2
1
0
Which of the following is a correct statement?
Φ {a,b}
{a} {a,b}
a {a,b}
If A = {1,{5,6},4}. Which of the following is correct?
{5,6} A
{5} A
{7} A
{6} A
Which one of the following is correct?
{x : x2 = -1, x Z} =
= 0
= {0}
= {}
If A B, then A - B is
B
A
B - A
Which one of the following is a finite set?
{x : x Z, x < 5}
{x : x W, x ≥ 5}
{x ; x N, x > 10}
{x : x is an even prime number}
