Mathematics · Coordinate Geometry
If points P(2, 3, 4), Q(5, 8, 7) and R(-1, -2, 1) are collinear, then R divides the line segment PQ in the ratio:
- 12 : 1 externally
- 21 : 2 internally
- 31 : 2 externally✓
- 42 : 1 internally
Correct answer
1 : 2 externally
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