Let $P$ be the statement ' $n$ is a multiple of 4' and $Q$ be the statement ' $n^{2}$ is a multiple of 8'. Which of the following is correct? (Here $n$ is a positive integer.)

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Let $P$ be the statement ' $x > 3$ ' and $Q$ be the statement ' $x^{2} > 9$ '. Which of the following is correct? (Here $x$ is a real number.)
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