In this I will blog I will solve some questions on the topics I learned in my previous blog.

1. What are sets?

https://wtfuniverse.wordpress.com/2019/04/22/what-are-sets/

2. What are different types of sets?

https://wtfuniverse.wordpress.com/2019/04/22/what-are-different-types-of-sets/

3. What are the different types of operations on sets?

https://wtfuniverse.wordpress.com/2019/04/22/what-are-the-different-types-of-operations-on-sets/

4. What are the different laws of alegbra of sets?

https://wtfuniverse.wordpress.com/2019/04/22/what-are-the-different-types-of-operations-on-sets/

Now to the questions:

Q1. For any setA, (A’)’ is equal to

(a) A’ (b) A (c) Φ (d) none of these.

A1. (b) because the complement of a complement is the original set.

Q2. LetA and B be two sets in the same universal set. Then, A -B =

(a) A∩B (b) A’∩B (c) A∩B’ (d) none of these.

A2. (c) because the set contains all the elements of A-B.

Q3. The number of subsets of a set containing n elements is

(a) n (b) 2ⁿ- 1 (c) n² (d) 2ⁿ

A3. (d) read my blog no 2.

Q4. For any two sets A and B, A ∩ (A ∪ B) =

(a) A (b) B (c) Φ (d) none of these

A4. (a) draw a Venn diagram if u were not able to solve it.

Q5.Let U be the universal set containing 700 elements. If A, B are sub-sets of U such that n(A)=200,n(B)=300 and n(A∩B)=100 .Then,n(A’∩B’)=

A5.