How many line segments are there in a complete graph with 4 points, if every pair of points is joined by a segment?
- A.4
- B.5
- C.6 ✓
- D.8
Explanation: Every pair of the 4 points gets one segment: 4×3÷2 = 6 segments.
Class 6 IMO Mathematics Olympiad practice · Algebraic Thinking · Patterns in Mathematics
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