waecmaths question:
Given that $P=\{x:1\le x\le 6\}$ and $Q=\{x:2<x<10\}$ , where x is an integers. Find $n(P\cap Q)$
Option A:
4
Option B:
6
Option C:
8
Option D:
10
waecmaths solution:
$\begin{align} & P=\{1,2,3,4,5,6\} \\ & Q=\{3,4,5,6,7,8,9\} \\ & P\cap Q=\{3,4,5,6\} \\ & n(P\cap Q)=4 \\\end{align}$
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