Question

If A = {1, 2, 3, 4}, B = {3, 4, 5, 6}, C = {5, 6, 7, 8 }and D = { 7, 8, 9, 10 }; find
(i) A ∪ B
(ii) A ∪ C
(iii) B ∪ C
(iv) B ∪ D
(v) A ∪ B ∪ C
(vi) A ∪ B ∪ D
(vii) B ∪ C ∪ D
NCERT Solutions for Class 11th Mathematics Chapter 1 Exercise 1.4 4

Answer 1

(i) A U B = {1,2,3,4,5,6}
(ii)A U C = {1,2,3,4,5,6,7,8}
(iii)B U C = {3,4,5,6,7,8}
(iv)B U D ={3,4,5,6,7,8,9,10}
(v)A U B U C ={1,2,3,4,5,6,7,8}
(vi)A U B U D ={1,2,3,4,5,6,7,8,9,10}
(vii)B U C U D ={3,4,5,6,7,8,9,10}