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    Answers and rating deltas for
    Udacity function valid_year(year) -- Why is 1920 considered incorrect?
| Author | Votes | Δ | 
|---|---|---|
| Burhan Khalid | 1 | +0.20 | 
| bwomp99 | 1 | +1.79 | 
| Nick Burns | 0 | -3.38 | 
Last visited: Sep 14, 2014, 5:07:29 AM