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)
Which of the following is a correct statement?
Φ {a,b}
{a,b}
{a} {a,b}
a {a,b}
Given A = {5,6,7,8}. Which one of the following is incorrect?
Φ A
{7,8,9}
{5}
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
Which of the following statements are true?i) For any set A, A is a proper subset of Aii) For any set A, is a subset of Aiii) For any set A, A is a subset of A
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(i), (ii) and (iii)
Which one of the following is correct?
{x : x2 = -1, x Z} =
= 0
= {0}
= {}
The shaded region in the adjoining diagram represents
A - B
B - A
A Δ B
A'
The number of subsets of the set {10,11,12} is
3
8
6
7
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
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}
