সার্বিক সেট U ={1,2,3,4,5}, A = {1,2,4}, B = {1,3,5} হলে A'∪B' হবে-

 

A  {1,2,3)

B  {2,3,4}

C {3,4,5}

D  {2,3,4,5}

Solution

Correct Answer: Option D

U ={1,2,3,4,5},

A = {1,2,4}, A'=U-A= {1,2,3,4,5}- {1,2,4} ={3,5}


B'= U-B={1,2,3,4,5}-{1,3,5}  = {2,4}


A'∪B' = {3,5} U {2,4} ={2,4,3,5}

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