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Show that points , and are collinear.
Show that points $P(-2, 3, 5)$, $Q(1, 2, 3)$ and $R(7, 0, -1)$ are collinear.
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From ISC 2025 Mathematics Paper 1, question 15(iii).
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From ISC 2025 Mathematics Paper 1, question 15(iii).