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NCERT Exemplar Class 11 Maths Chapter 1 Sets Exercise Solutions Fill in the Blank Questions
Table of Contents
Solved Fill in the Blank Type Questions of NCERT Exemplar Sets Exercise
Fill in the blanks in each of the Exercises from 44 to 51 :
Question 44
The set {x ∈ R : 1 ≤ x < 2} can be written as __.
Answer 44
[1,2)
Question 45 When A = φ, then number of elements in P(A) is __.
Answer 45.
Here n(A) = 0
Then n[P(A)] = 2n(A) = 20 = 1
Question 46. If A and B are finite sets such that A ⊂ B, then n (A ∪ B) = __.
Answer 46.
n(A ∪ B) = n(B)
Question 47. If A and B are any two sets, then A – B is equal to __.
Answer 47. A-B = A ∩ B′
Question 48. Power set of the set A = {1, 2} is __.
Answer 48. Power set of the set A is P(A) = { {1}, {2}, {1,2}, ɸ }
Question 49.
Given the sets A = {1, 3, 5}, B = {2, 4, 6} and C = {0, 2, 4, 6, 8}. Then the
universal set of all the three sets A, B and C can be __.
Answer 49
U = { 0, 1, 2, 3, 4, 5, 6, 8 }
Question 50.
If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {1, 2, 3, 5}, B = {2, 4, 6, 7} and
C = {2, 3, 4, 8}. Then (i) (B ∪ C)′ is __. (ii)(C – A)′ is __.
Answer 50
(i) B ∪ C = {2, 3, 4, 6, 7, 8}
(B ∪ C)′ = {1, 5, 9, 10}
(ii) C-A = {4, 8}
(C – A)′ = {1, 2, 3, 5, 6, 7, 9, 10}
Question 51. For all sets A and B, A – (A ∩ B) is equal to __.
Answer 51
A ∩ B′
