Question

if A={11,21,31,41},B={12,22,31,32}then find: 1) AUB 2)AūB
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Answer 1

Ahoy!!

A = { 11 , 21 , 31 , 41 }

B = { 12 , 22 , 31 , 32}

So ,

A U B = { 11 , 12 , 21 , 22 , 31 , 32, 41 }

And

A n B = { 31}