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If A = {2, 4, 6, 8, 10} and B = {3, 6, 9, 12, 15}, find A – B and B – A.

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If A = {2, 4, 6, 8, 10} and B = {3, 6, 9, 12, 15}, find A – B and B – A.

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Given sets are 

A {2, 4, 6, 8, 10} and B = {3, 6, 9, 12, 15} 

A – B = {2, 4, 6, 8, 10} – {3, 6, 9, 12, 15}

= {2, 4, 8, 10} …… (1) 

B – A = {3, 6, 9, 12, 15} – {2, 4, 6, 8, 10} 

= {3, 9, 12, 15} …… (2) 

From (1) and (2), A – B ≠ B – A

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