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Answers and rating deltas for

Why does it say invalid expression?

Author Votes Δ
Andrew Shepherd 4 +1.13
Chandu 1 -0.56
Javed Akram 1 -0.13
Siten 1 +0.29
Rupok 0 -3.76
Last visited: Sep 14, 2014, 5:07:29 AM