Mathematics
Joffan
  • Member for 6 years, 9 months
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About

Interested in mathematical counting puzzles and many others ${\overset\infty \smile}$

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20
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Top posts
All Questions Answers
Votes Newest
21
Advise new users to stay engaged with their question
Apr 8
13
Comments soliciting downvotes
Feb 5 '15
5
When someone gives you -2 points
Oct 21 '17
3
Underline does not display in fraction. Mathjax bug?
Jan 8 '17
2
Why should someone receive reputation if someone else edits their terrible question into a good one?
Jul 25 '16
2
Vote to "Leave Open" from question screen
Feb 26 '17
1
The [contradiction] tag
Apr 16 '15
0
What to do with two old questions that are clear duplicates but not marked so?
Feb 20 '17
0
MathJax v2.5 beta released
Jan 21 '15
-6
Too quick to close
Mar 19 '15
Top network posts
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79
Prove that the equation $x^2-y^2 = 2002$ has no integer solution
53
Where does the constant increase by 2 of differences between integer square values come from?
52
How many subsets of set $\{1,2,\ldots,10\}$ contain at least one odd integer?
47
Every point of a grid is colored in blue, red or green. How to prove there is a monochromatic rectangle?
45
Is there a combinatorial interpretation of the triangular numbers?
41
How many pairs of numbers are there so they are the inverse of each other and they have the same decimal part?
31
How do I find the diameters of the circles in this geometry puzzle?

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