NCERT Class XI Mathematics - Sets - Solutions
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Question : 69
Total: 73
Find sets A, B and C such that A ∩ B, B ∩ C and A ∩ C are non-empty sets and A ∩ B ∩ C = ϕ
Solution:
Take A = {1, 2}, B = {1, 4} and C = {2, 4}
Now, A ∩ B = {1} ≠ ϕ, B ∩ C = {4} ≠ ϕ and A ∩ C = {2} ≠ ϕ
But A ∩ B ∩ C = ϕ.
Now, A ∩ B = {1} ≠ ϕ, B ∩ C = {4} ≠ ϕ and A ∩ C = {2} ≠ ϕ
But A ∩ B ∩ C = ϕ.
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