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 Yearling
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Mar
20
comment How many ways are there to make a schedule of 6 subjects
The only way to arrive at an answer of 240 seems to be that Physics follows Math (360 ways) but is not immediately following (less 120 ways) to arrive at 240 = 360-120 ways. Check the precise wording of the question.
Mar
8
comment Proof that the empty set is a relation
We had a Prime Minister who was a cow - but I will leave to the reader's imagination which one.
Mar
8
comment Is there a way to calculate absurdly high powers?
@mathreadler:, Yep, still have mine downstairs also, right beside my two ivory slide rules and Ritchie;s First Steps in Latin.
Mar
2
awarded  Yearling
Feb
15
revised Easy way to compute logarithms without a calculator?
added 105 characters in body
Feb
15
answered Easy way to compute logarithms without a calculator?
Feb
10
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