How many squares?
Finding the number of possible squares in this pictureCorrect answers: 115
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
Pons CometIn 1801, French astronomer Jean-Louis Pons (24 Sep 1761 - 14 Oct 1831) discovers his first comet. In his lifetime he discovered or co-discovered up to 37 comets. Since 1789, when he got a post at the Observatory at Marseilles as concierge, Pons quickly learned how to make observations with the instruments. He had a remarkable ability to remember the star fields he observed and to recognize changes. He logged his first discovery of a comet on 11 July 1801, which he had to share with Messier who found it a day later. Interestingly, as Pons' made his first comet discovery, that comet was Messier's last. Almost once every year, thereafter until 1827 when he eyesight declined, Pons found a new comet. Jean-Louis Pons set the record for visual discoveries of comets by an individual. |