Question

Good morning everyone


2. Let U = {5, 6, 7, 8, 9, 10), P = {5, 6, 7,9}, Q = {5, 6, 10} and R = {5,9}. Find the following.
(i) P'
(ii) Q'
(iii) R
(iv) P -
(v) QUR
(vi) POR
(vii) P -(QUR) (viii) P -(QnR)​​

Answer 1

Correct option is

C

45

Number of elements in A=10

Number of subsets of A containing exactly two elements

= Number of ways we can select 2 elements from 10 elements

10

C

2

=

2

10×9

=45

∴ Number of subsets of A containing exactly two elements =45

Answer 2

Answer:

2. Let U = {5, 6, 7, 8, 9, 10), P = {5, 6, 7,9}, Q = {5, 6, 10} and R = {5,9}. Find the following.

(i) P'

(ii) Q'

(iii) R

(iv) P -

(v) QUR

(vi) POR

(vii) P -(QUR) (viii) P -(QnR)