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Quixotic earned this badge 4 times
apr 16 at 23:14
Proving $ { 2n \choose n } = 2^n \frac{ 1 \cdot 3 \cdot 5 \cdots (2n-1)}{n!} $
feb 22 at 2:17
Is the void set (∅) a proper subset of every set?
jan 2 at 0:52
Drawing heart in mathematica
sep 1 at 9:56
Checking if a number is a Fibonacci or not?

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