Search found 9 matches

by Tmabbbb
Tue Oct 21, 2014 8:07 am UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 488378

Re: Favorite math jokes

This is one some friends came up with the other day:

How do you open a closed door?

Complement it.
by Tmabbbb
Fri Aug 23, 2013 9:26 pm UTC
Forum: Mathematics
Topic: S subset N, exists an r in N such that if r in S then S=N
Replies: 14
Views: 3969

Re: S subset N, exists an r in N such that if r in S then S=

Similarly, in any bar there exists a person such that if they are drinking, then everybody is drinking.
by Tmabbbb
Thu Apr 25, 2013 4:07 am UTC
Forum: Mathematics
Topic: Silly geometry question
Replies: 6
Views: 1594

Re: Silly geometry question

This is cool, I went about it in a completely different way. Any integer squared is either congruent to 0 or 1 mod 4 so the difference of two integers squared is 0, 1, or 3 mod 4. So B^2 = C^2 - A^2 can not be congruent to 2 mod 4.
by Tmabbbb
Tue Nov 17, 2009 5:39 am UTC
Forum: General
Topic: Is your ZIP code prime?
Replies: 90
Views: 7574

Re: Is your ZIP code prime?

Sir_Elderberry wrote:74010 is even and divisible by five. One over is 70409 or 70411, both of which are odd.


I believe that what he meant was that his number was both even and one more than a prime, not one more than an even prime, in which case it would have to be 00003. The number 74010 is one over, and it's even.
by Tmabbbb
Sun Aug 23, 2009 5:29 am UTC
Forum: Forum Games
Topic: Count in Prime Palindromes!
Replies: 106
Views: 12922

Re: Count in Prime Palindromes!

727
by Tmabbbb
Sun Aug 23, 2009 5:22 am UTC
Forum: Forum Games
Topic: Non-Sequitur Showdown.
Replies: 4272
Views: 541398

Re: Non-Sequitur Showdown.

What is the maximum airspeed velocity of a coconut-laden swallow?
by Tmabbbb
Fri Jul 24, 2009 4:15 am UTC
Forum: Mathematics
Topic: Post your interesting/challenging/fun integrals
Replies: 53
Views: 9576

Re: Post your interesting/challenging/fun integrals

I am only in ninth grade, but I believe I may be of assistance in this problem. I am not aware of how to make the mathematical symbols with my keyboard, so I will just describe the procedure. I replace (log x) for u, and 1/x becomes du. The resulting integral is then 1/u du, which becomes log u. The...
by Tmabbbb
Wed May 20, 2009 3:27 am UTC
Forum: General
Topic: Who the dickens are you?
Replies: 10922
Views: 2373714

Re: INTRO THREAD THE THIRD

I have been able to solve the Rubik's cube in approximately 30 seconds. However, it was merely a hobby, and my timer ran out of batteries because I was unable to turn it off myself. Though I would like to claim that I discovered a method for solving the cube, the credit is attributed to this website...
by Tmabbbb
Mon May 18, 2009 5:01 pm UTC
Forum: General
Topic: Who the dickens are you?
Replies: 10922
Views: 2373714

Re: INTRO THREAD THE THIRD

I'm Foster. I've been lurking aboot the forums for a few months, and I eventually decided to join. Regarding my career, the technical term would be a "nineth grader". However, I excel at math and English, and I greatly enjoy the sophisticated humour of xkcd. I'm also a fan of The Order of ...

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