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Does anyone else feel that some answers of challenge section are wrong?

sometime I am feeling I am right but answer shows wrong, I feel some questions are poorly written.

22nd Feb 2017, 12:17 PM
Raj Kumar Chauhan
Raj Kumar Chauhan - avatar
1 Resposta
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no
23rd Feb 2017, 7:24 AM
Ahmed Sayed
Ahmed Sayed - avatar