waecmaths question:
If P = { 1,3, 5, 7,9} and Q = {2, 4, 6, 8, 10} are subsets of a universal set U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what are the elements of $P'\cap Q'$
Option A:
{1, 3, 5, 7,9}
Option B:
{2, 4, 6, 8, 10}
Option C:
Ø
Option D:
{1, 2, 6,8,10}
waecmaths solution:
$\begin{align} & U=\{1,2,3,4,5,6,7,8,9,10\} \\ & P=\{1,3,5,7,9\} \\ & P'=\{2,4,6,8\} \\ & Q=\{2,4,6,8,10\} \\ & Q'=\{1,3,5,7,9\} \\ & P'\cap Q'=\varnothing \\\end{align}$
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