Question

[3.03] If W = {1, 2, 3, 4 …} and subset Z = {positive odd integers}, what is Z'?

{1, 2, 3, 4 …}

{ }

{5, 6, 7, 8 …}

{2, 4, 6, 8, …}

Answer 1

same question as before, same answer

Answer 2

Z' = {positive even integers} = {2, 4, 6, 8....}

Answer 3

Z' is whatever is not there in Z but is there in W[If and only if W is the universal set]
So what do you think?