Mathematics
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Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 3 years, 1 month
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133 In a village, $90\%$ of people drink Tea, $80\%$ Coffee, $70\%$ Whiskey, $60\%$ Gin. Nobody drinks all four. What percentage of people drinks alcohol? Aug 7 '18
98 Non-associative operations Aug 23 '18
38 Without using a calculator and logarithm, which of $100^{101} , 101^{100}$ is greater? Nov 27 '17
30 Covering the Euclidean plane with constructible lines and circles Sep 10 '18
28 Can you completely permute the elements of a matrix by applying permutation matrices? May 10 '18
25 Let $A=(a_{ij})$ be an $n\times n$ matrix. Suppose that $A^2$ is diagonal. Must $A$ be diagonal? Apr 12 '18
16 What does it mean for a polynomial to be the 'best' approximation of a function around a point? Sep 27
13 Without using a calculator, is $\sqrt[8]{8!}$ or $\sqrt[9]{9!}$ greater? May 1 '18
10 A thorough explanation on why division by zero is undefined? Apr 23 '19
9 Power tower of $10$ Mar 30 '18
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