A Union B = A Intersection B, A=B
Anonymous:
you need formula?
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Yes ..if the elements of both groups are equal then it will be possible.
Eg:a={1,2,3},b={1,2,3}
Then 1)a union b
={123}u{123}
={123123}
A union b={123}
2)a intersection b
={123}n{123}
={123}
Hence proved
Eg:a={1,2,3},b={1,2,3}
Then 1)a union b
={123}u{123}
={123123}
A union b={123}
2)a intersection b
={123}n{123}
={123}
Hence proved
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