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If A = { 1 , 2 , 3 , 4 , 5 , 6 , 7 ] A...

If A = { 1 , 2 , 3 , 4 , 5 , 6 , 7 ] And B = { 2 , 3 , 5 , 7 } Then prove that A ∩ B = B

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