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Answers and rating deltas for
What is the proof of of (N–1) + (N–2) + (N–3) + ... + 1= N*(N–1)/2
| Author | Votes | Δ |
|---|---|---|
| Steve314 | 8 | +1.02 |
| gius | 5 | +3.73 |
| John Feminella | 3 | +0.01 |
| sepp2k | 2 | -0.28 |
| ShPavel | 1 | -1.26 |
| IVlad | 1 | -1.69 |
| Viral Shah | 1 | -1.19 |
| John Kane | 1 | -1.07 |
| martiert | 0 | -3.62 |
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