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Solution

Correct Option: 4

Rule: second number = (first)^2 + 4.

112+4=12511^2 + 4 = 125 (correct), 332+4=109333^2 + 4 = 1093 (correct), 352+4=122935^2 + 4 = 1229 (correct), 172+4=29329517^2 + 4 = 293 \neq 295.

So 17 : 295 is the odd pair.

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