[Solved] A farmer built a fence around his 17 cows, in a square shaped region. He used 27 fence poles on each side of the square. How many poles did he need altogether?

This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities. The correct answer is 104 poles. The four corner poles are common to both sides, so we have: 25 poles x 4 sides + 4 corner poles = 104 poles