Advertisements
Advertisements
प्रश्न
Let all the students of a class is an Universal set. Let set A be the students who secure 50% or more marks in Maths. Then write the complement of set A.
Advertisements
उत्तर
The complement of set A is the set of students who are not in set A.
Since A = students who secure 50% or more marks in Maths,
Complement of A (A′) = students who secure less than 50% marks in Maths.
A′ = The set of students who secure less than 50% marks in Maths.
APPEARS IN
संबंधित प्रश्न
Which set of numbers could be the universal set for the set given below?
A = set of multiples of 5.
B = set of multiples of 7.
C = set of multiples of 12.
Which set of numbers could be the universal set for the set given below?
P = set of integers which are multiples of 4.
T = set of all even square numbers.
Given the universal set = {-7,-3, -1, 0, 5, 6, 8, 9}, find: A = {x : x < 2}
Given the universal set = {x : x ∈ N and x < 20}, find:
C = {x : x is divisible by 4}
Given, universal set = {x : x ∈ N, 10 ≤ x ≤ 35}.
A = {x ∈ N : x ≤ 16} Find: A'
Given universal set = {x ∈ Z : -6 < x ≤ 6}. P = {x : x is a non-positive number}. Find: P'
Given A = {x : x ∈ N and 3 < x ~ 6} and 8 = {x : x ∈ W and x < 4}. Find: A ∪ B
For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of C = {prime numbers}.
Also, find a complement of C.
For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of D = {even numbers less than 10}.
Also, find a complement of D.
If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: A∩B
If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: B - A
If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n(A)
If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: A∪B and n(A∪B)
If A = {2, 4, 6, 8} and B = {3, 6, 9, 12}, find: (A ∩ B) and n(A ∩ B)
If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: (A – B) and n(A – B)
If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : n(Q).
