# NCERT Class 11-Math's Exemplar Chapter 1 Sets CBSE Board Problems

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**Question 43:**

If X and Y are two sets and X′ denotes the complement of X, then is equal to

(A)

(B)

(C)

(D)

**Answer: (C)**

## Fill in the Blanks in Each of the Exercises from 44 to 51

**Question 44:**

The can be written as ______________.

**Answer:**

**Question 45:**

When , then number of elements in is ______________.

**Answer:**

**Question 46:**

If A and B are finite sets such that , then *n* ______________.

**Answer:**

**Question 47:**

If A and B are any two sets, then is equal to ______________.

**Answer:**

**Question 48:**

Power set of the set is ______________.

**Answer:**

**Question 49:**

Given the sets . Then the universal set of all the three sets A, B and C can be ______________.

**Answer:**

**Question 50:**

If , A and . Then

(i) is ______________.

(ii)is ______________.

**Answer:**

(i)

(ii)

**Question 51:**

For all sets A and B, A – (A ∩ B) is equal to ______________.

**Answer:**

**Question 52:**

Match the following sets for all sets A, B and C

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(a)

(b)

(c)

(d)

(e)

(f)

**Answer:**

(i)

(ii)

(iii)

(iv)

(v)

(vi)

State True or False for the following statements in each of the Exercises from 53 to 58: