if A and B are two non empty sets then AUB and AnB iff
a. A<B
b. B<A
c. A=B
d. none of these
Answers
Given : A and B are two non empty sets then AUB = A∩B iff
To Find : Correct option
a. A⊂B
b. B⊂A
c. A=B
d. none of these
Solution:
AUB = A∩B
iff A = B
as A = B then A∩B = A = B
AUB = A = B
=> AUB = A∩B = A = B
if A ⊂ B
Then AUB = B
A ∩ B = A
Hence AUB ≠ A ∩ B
AUB = A ∩ B if A = B
if B ⊂ A
Then AUB = A
A ∩ B = B
Hence AUB ≠ A ∩ B
AUB = A ∩ B if A = B
Correct option is A = B
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TO CHOOSE THE CORRECT OPTION
A and B are two non empty sets then
ANSWER
A and B are two non empty sets then
EXPLANATION
Then
and
So
Hence
Then
So
Therefore
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