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18h
revised Can an infinite sum of irrational numbers be rational?
edited body
18h
revised Can an infinite sum of irrational numbers be rational?
deleted 5 characters in body
19h
revised Can an infinite sum of irrational numbers be rational?
deleted 468 characters in body
19h
answered Can an infinite sum of irrational numbers be rational?
22h
awarded  Critic
22h
revised What is the probability that none of the cans of soup are next to each other?
added 1 character in body
22h
answered What is the probability that none of the cans of soup are next to each other?
Jan
20
awarded  Popular Question
Oct
7
awarded  Popular Question
Jul
2
awarded  Curious
Jan
29
awarded  Yearling
Oct
13
asked Can I approximate sine and cosine without derivatives?
Aug
12
revised A set of the plane recursively including “crosses”…
edited title
Aug
10
comment How to expand and simplify this expression?
For example: rotating 90° and then reflecting has not the same result as reflecting and then rotating 90°.
Aug
10
revised “Constrained” numerical solutions of ODEs with conservation laws?
edited title
Aug
10
revised “Constrained” numerical solutions of ODEs with conservation laws?
added 9 characters in body
Aug
10
asked “Constrained” numerical solutions of ODEs with conservation laws?
Aug
10
comment A set of the plane recursively including “crosses”…
1) No this is not homework and I am not a student. This is an original problem which I invented. 2) Yes you are right, I should have said "non-empty", I'm going to correct.
Aug
10
revised A set of the plane recursively including “crosses”…
added 8 characters in body
Aug
10
asked A set of the plane recursively including “crosses”…