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Answers and rating deltas for

In Ruby, how do I get the sum of the odd elements?

Author Votes Δ
Nakilon 4 +1.85
glenn mcdonald 3 +1.20
miku 2 -0.36
ma11hew28 2 +0.05
edgerunner 1 -2.15
Last visited: Sep 14, 2014, 5:07:29 AM