128 reputation
9
bio website MichaelJSwart.com
location Waterloo, Canada
age
visits member for 2 years, 11 months
seen 10 hours ago

See my website for more about me: http://michaeljswart.com/?page_id=2


Oct
9
awarded  Commentator
Oct
9
comment What is the meaning of a number's “representation” on Wolfram Alpha?
I would argue it isn't a curious fact at all. I'd say that without any noticeable pattern, it's no more or less interesting than any other random expression that equates to the same value.
Jan
30
comment Unusual 5th grade problem, how to solve it
I wouldn't be surprised if a bright fifth grader came up with the trivial x=y=z=a=b=5. Then answer the next question with "No": x=y=z=a=6, b=3. That seems do-able for bright grade fives.
Dec
9
awarded  Nice Question
Dec
7
awarded  Benefactor
Dec
6
awarded  Promoter
Oct
19
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
Also relevant: Integer sequence "Number of permutations with no hits on 2 main diagonals." oeis.org/A000316
Oct
19
awarded  Editor
Oct
19
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
See question text for a link to my blog post on this.
Oct
19
revised What's the General Expression For Probability of a Failed Gift Exchange Draw
Linked to a blog article about this problem
Oct
19
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
Yep, the blog post goes live at noon today. When that happens, I'll do it :-)
Oct
17
awarded  Scholar
Oct
17
accepted What's the General Expression For Probability of a Failed Gift Exchange Draw
Oct
17
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
This is brilliant, thanks so much. Can I quote your answer in a blog post? I'll be sure to provide links back.
Oct
17
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
Didier, Being able to use "know" four times in a sentence. Very nice, I actually smiled at that.
Oct
17
awarded  Supporter
Oct
17
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
Nice answer Ross, I'm also impressed by your math typography skills. Looks very professional. I'm not sure what the expression with e means (is that as n approaches infinity?) But you're right. The function is pretty close.
Oct
17
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
@Didier, It's an English expression. I'm telling Charles that he helped a lot. And thanks for your link Didier.
Oct
17
comment What's the General Expression For Probability of a Failed Gift Exchange Draw
That comment is more helpful than you know. It gives me something to research (Google). Thanks.
Oct
17
awarded  Student