M Maschke Aug 2012 2,483 776 Sep 3, 2019 #2 We all enjoy your puzzles. Last edited: Sep 3, 2019 Reactions: 1 person

idontknow Dec 2015 975 128 Earth Sep 5, 2019 #3 Create a challenging thread and let me see what can I do . For example integrals ? Let me give you one : Prove the statement \(\displaystyle \frac{22}{7} \approx \pi\) . But without calculator ofc . Last edited: Sep 5, 2019

Create a challenging thread and let me see what can I do . For example integrals ? Let me give you one : Prove the statement \(\displaystyle \frac{22}{7} \approx \pi\) . But without calculator ofc .