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Don Thousand

NYC, NY, USA

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76
Function defined everywhere but continuous nowhere
math.stackexchange.com

33
Print 0 to 100 without 1-9 characters
codegolf.stackexchange.com

33
Pandas: update column values from another column if criteria
stackoverflow.com

25
How do you find Pythagorean triples that approximately correspond to a right triangle with a given angle?
math.stackexchange.com

17
Find the next number in this sequence
puzzling.stackexchange.com

16
How to play computer from a particular position on chess.com app
chess.stackexchange.com

16
How to solve these $3$ equations for three unknowns $x$,$y$,$z$?
math.stackexchange.com

13
How to solve $\sin^2(x)+\sin2x+2\cos^2(x)=0$
math.stackexchange.com

13
$(x^2+1)(y^2+1)=z^2+1$
math.stackexchange.com

12
A way to express 100 by using the first four natural numbers
math.stackexchange.com

11
$a+b+c+d+e+f=14$ , where $a,b,c,d,e$ and $f$ are whole numbers $\le 4$
math.stackexchange.com

10
Are the sets of a power set considered "elements?"
math.stackexchange.com

10
Has this basic number theory conjecture been discovered or proved before?
math.stackexchange.com

9
Normal of a point on the surface of an ellipsoid
math.stackexchange.com

8
Three coins are tossed. If one of them shows a tails, what is the probability that all three coins show tails?
math.stackexchange.com

8
Where are the irrational numbers?
math.stackexchange.com

7
Prove that there is no non-constant polynomial $P(x)$ such that $P(n)$ is a prime number for all positive integers n
math.stackexchange.com

7
Optimisation without calculus
math.stackexchange.com

7
Number Spiral Problem
codegolf.stackexchange.com

7
Gambling snap game
puzzling.stackexchange.com

7
Can an integer that is $3\pmod 7$ be expressed as a sum of two cubes?
math.stackexchange.com

7
Expected value with a die with 9 faces
math.stackexchange.com

7
The product of two distinct numbers from $\{1,2,3,\ldots,36,37\}$ equals the sum of the rest. What's the difference of the two numbers?
math.stackexchange.com

7
Street Combinatorics - 6 by 7 grid
math.stackexchange.com

7
Find the lowest integer positive value of $36^x-5^y$
math.stackexchange.com

6
About Utterly odd numbers.
math.stackexchange.com

6
Construct an A4 paper.
math.stackexchange.com

6
Can you determine a set of values from a set of sums?
math.stackexchange.com

6
Tom & Jerry and True/False Answers Logic Puzzle
math.stackexchange.com

6
For real numbers $x$ and $y$ , find the minimum value of $\sqrt{x^2+y^2}+\sqrt{(x-3)^2+(y-4)^2}$
math.stackexchange.com

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