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 Yearling
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18h
comment Can an infinite sum of irrational numbers be rational?
I don't recognize those coefficients B<sup>2n+2</sup>. Can you provide a link?
Nov
20
revised How many different ways can I get up a flight (of stairs) with 11 steps?
Clarified title
Nov
20
suggested approved edit on How many different ways can I get up a flight (of stairs) with 11 steps?
Oct
5
answered Probability of 2 students sitting next to each other.
Sep
6
comment How many steps would it take at least to create a chessboard?
Nicely done - much more elegant and concise than I was working towards.
Sep
6
comment How many steps would it take at least to create a chessboard?
@MarcvanLeeuwen: I'm working on that; . It's been a long, long time since I did any rigorous mathematics My notes below (deleted 2nd solution) shows that an even number of clicks is required.. Hadn't thought of the 7 white squares, but as white squares need to be swapped an even number of times the only click to pair it up with for a net contribution is to unclick the same square again.
Sep
6
answered How many steps would it take at least to create a chessboard?
Aug
28
comment Strategy for reading math books, is it better to prove the theorems yourself or just read them?
How fast you move through the material is much less important than how well you understand it 3 months, or 30 months, or 30 years later. You are learning so much more by replicating the proofs, and ingraining it so much more deeply, that a comparison with other students isn't fair to them. With time, you will find yourself becoming deeply familiar with the various types of proofs being applied, move through them faster, and be a much stronger mathematician in consequence. Richard Feynman discusses this lesson learned in his memoirs.
Jun
13
comment Express 99 2/3% as a fraction? No calculator
As multiplication is a little easier and more intuitive than division, I would recommend multiplying to and bottom by 3 instead of dividing by 100.
Mar
14
revised Does the square or the circle have the greater perimeter? A surprisingly hard problem for high schoolers
added 3 characters in body
Mar
14
revised Does the square or the circle have the greater perimeter? A surprisingly hard problem for high schoolers
added 66 characters in body
Mar
14
revised Does the square or the circle have the greater perimeter? A surprisingly hard problem for high schoolers
added 30 characters in body
Mar
14
answered Does the square or the circle have the greater perimeter? A surprisingly hard problem for high schoolers
Mar
2
awarded  Yearling
Jan
19
comment Can you be 1/12th Cherokee?
@EricLippert: It depends on whether you are counting backwards to a point in time, or to a number of generations. For many people it makes more sense to count backwards to a point in time, for which this means of counting makes sense. As others have pointed out, all methods of counting ancestry are approximations at best since 99% of all our genes are identical across the entire human race.
Jan
19
answered Can you be 1/12th Cherokee?
Mar
22
comment Why do we require radians in calculus?
@Ruslan: No, how can you say that on a Mathematics site! There is a world of difference between N⋅m and J; namely that one measures the magnitude of a pseudo-vector, and the other the magnitude of a vector.
Mar
2
awarded  Yearling
Jan
23
answered What is the difference between a point and a vector
Jan
13
awarded  Autobiographer