If S = {positive integers} and subset T = {2, 4, 6, 8 …}, what is T'?

{2, 4, 6, 8 …}

{1, 2, 3, 4, …}

{positive odd integers}

{ }

Question

If S = {positive integers} and subset T = {2, 4, 6, 8 …}, what is T'? 

 {2, 4, 6, 8 …} 

 {1, 2, 3, 4, …} 

 {positive odd integers} 

 { }

anonymous · Answer

T' is the complement of T which means it is the set which when combined with T would give us back S. Now T is set of all positive even integers. Now if we combine the set of all positive odd integers ,we would get the whole set S={positive integers}.
So T'={positive odd integers}.