Here's a visual proof that (2a+1)²=8Tₐ+1, where Tₐ is a triangle number Tₐ = 1+2+...+a









































































Odgovor korisniku/ci @fermatslibrary
When Diarmuid Feeney (1834-1906) sought visual proof of his wife Siobhan’s unfaithfulness, he used flypaper, groats, and a piece of cheap muslin to catch them in flagrante delicto. His mailman was found in the closet. As was his delicto.
05:33 - 2. velj 2020.
iz: Florida, USA
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