Given A = {students who like cricket} and B = {students who like tennis}; n(A) = 20, n(B) = 15 and n(A ∩ B)= 5.
Illustrate this through a Venn diagram. Hence find n(A ∪ B).
Solution:
If n(ξ) = 50, n(A) = 15, n(B) = 13 and n(A ∩ B) = 10. Find n(A’), n(B’) and n(A ∪ B).
Solution:
If n(ξ) = 60, n(A) = 35, n(B’) = 36 and n((A ∩ B)’) = 51, find :
(i) n(B)
(ii) n(A ∩ B)
(iii) n(A ∪ B)
(iv) n(A – B)
Solution:
More Solutions:
- If A, B are two sets, then A ∪ B
- If A = {x | x is a colour of rainbow} and B = {white, red, green}
- If ξ = (all digits in our number system}
- If A and B are two sets such that n(A) = 22, n(B) = 18
- If ξ={x : x ϵ N, r < 25} and A = {x : x is a composite number}
- If ξ = {x | x ϵ N, x ≤ 12}, A = {prime numbers} and B = {odd numbers}
- If ξ = {x : x ϵ N, x ≤ 12}, A= {x : x ≥ 7} and B = {x : 4 < x < 10}
- In a city, 50 percent of people read newspaper A