| Thread | Last Post | Replies |
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| 15% add to get original | 25 Feb 2010 22:03 GMT | 7 |
this has completly escaped me: I know that 3576.41 is 15% of something but how to i find the orignal total? Many thanks
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| Phase shift/vertical shift/frequency change. tia sal22 | 15 Feb 2010 21:24 GMT | 1 |
Greetings all I'm trying to figure out a way to 1)phase shift 2)vertical shift
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| Most common leading integer | 14 Feb 2010 22:19 GMT | 2 |
What is the name of the engineer/mathematician who authored the theorem/conjecture that the most common leading integer of calculations is 1 ?
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| Alphabetizing Numbers | 14 Feb 2010 03:33 GMT | 10 |
How can numbers be represented as character strings, in such a way that the alphabetical order of the strings is the same as the order of the corresponding numbers? For example, the integers 1, 2, ... can be represented as the letters
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| Soduko Theorem | 11 Feb 2010 22:55 GMT | 9 |
Proposition. When a game of Soduko is complete, a digit such as 1, will occupy a different position in each of the nine 3x3 squares. True or False? Reasons?
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| The Jacobi-Madden soln to a^4+b^4+c^4+d^4 = e^4 and Pythagorean triples | 09 Feb 2010 12:29 GMT | 2 |
L. Jacobi and D. Madden proved that a^4+b^4+c^4+d^4 = e^4 has an infinite number of distinct, non-trivial rational solns by solving the case, a^4+b^4+c^4+d^4 = (a+b+c+d)^4
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| Re: IQ Test Question (?) SPOILER | 04 Feb 2010 12:37 GMT | 1 |
I surprised how you could solve this issue below I tried many times but no way I'll appreciate your help to send me more details about how I understand it In geometry.puzzles al263@lafn.org (William Stern) said:
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| Gambling Puzzle: PLEASE take this poll | 03 Feb 2010 13:45 GMT | 12 |
I propose a simple gambling problem, which I'm afraid might be too easy for this group. My *real* question is: How well known is this problem and its solution? You have $X but need $Y. (I don't think X and Y matter much; let X = 100,
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