## Search found 10 matches

- Sun Nov 02, 2014 7:25 pm
- Forum: Number Theory
- Topic: About Polya's conjecture.
- Replies:
**2** - Views:
**6850**

### Re: About Polya's conjecture.

Isn't the summatory Liouville function just the sum of the Mertens function at [n/(d^2)] for 1<= (d^2)<=n ? There's a way of calculating the Mertens function in O(n^(2/3+e)) (by Lehman, the same Lehman named on the page you linked to.) And on PE there are dozens of questions on the topic of 'sum the...

- Sun Nov 24, 2013 4:26 am
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**129304**

### Re: Errors/Warnings/Bugs

I'm having the same trouble as erickj00001 but with the latest problem. (Tried another computer too, but login / logout isn't working quite right either)

- Sun Nov 03, 2013 10:20 pm
- Forum: Number
- Topic: Average of Solutions to an Equation
- Replies:
**4** - Views:
**2499**

### Re: Average of Solutions to an Equation

150, because if (t1, t2,⋯,t24) is a solution then (1-t1, 2-t2, ⋯,24-t24) is too.

- Fri Nov 16, 2012 8:58 pm
- Forum: News, Suggestions, and FAQ
- Topic: Show problem statistics on problem description page.
- Replies:
**9** - Views:
**4062**

### Re: Show problem statistics on problem description page.

Also, once you're on a particular problem page you can hover the mouse over "Problem XXX" to display a tooltip with the number of members having solved that problem. I wanted to ask if you could possibly disable the mouseover feature for the most recent problem each week. The reason is that I somet...

- Fri Nov 16, 2012 8:25 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 397
- Replies:
**8** - Views:
**3342**

### Re: Problem 397

Be assured that there really are just 41 triangles with a 45-degree angle for k=1. Without giving anything away, the next step is to use common sense - look at the list of triangle coordinates your code made, do some of them feel like they wouldn't have a 45 degree angle? Try sketcking some on graph...

- Fri Nov 02, 2012 6:38 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 127
- Replies:
**36** - Views:
**12245**

### Re: Problem 127

1 has no prime factors, therefore the product of all distinct prime factors of 1 is the empty product, which by definition is equal to 1.

- Fri Mar 23, 2012 6:26 pm
- Forum: News, Suggestions, and FAQ
- Topic: To those who achieved 100%
- Replies:
**28** - Views:
**13647**

### Re: To those who achieved 100%

I just got to 100% after solving 331 . I'd deliberately left it until last as it was the most recent problem when I began a year ago. I started on PE to help with learning Python and Sage (I was already fluent in C), and only meant to solve enough problems to learn the syntax. Instead I got addicted...

- Tue Mar 20, 2012 2:06 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 376
- Replies:
**21** - Views:
**6026**

### Re: problem 376 clarification

The sets of dice {A,B,C}, {B,C,A} and {C,A,B} are the same set. Does {A,C,B} = {A,B,C}? i.e. Are all permutations of a set considered the same or is it just rotations of a specific permutation? It should be pretty obvious that the answer to that question is quite irrelevant. I thought the same at f...

- Sat Mar 10, 2012 2:30 am
- Forum: Recreational
- Topic: Logic Problem
- Replies:
**5** - Views:
**6734**

### Re: Logic Problem

The lady can't have black hair, since a professor with black hair answers the lady. Since the lady does not have brown hair, she must have white hair. Therefore she is not Prof White, and Prof Black is male, so she is Prof Brown. So Prof Black's hair must be brown.

- Thu Feb 02, 2012 4:26 am
- Forum: Recreational
- Topic: Missing Wedding Ring Finger
- Replies:
**18** - Views:
**13536**

### Re: Missing Wedding Ring Finger

My best guess: (admittedly I saw 30 years and ring ringer and tried to make everything else fit around...) The 'woman' is a mare. Horses don't have ring fingers - a horses' hoof is the middle digit. The fourth (and second) digit of the forelegs have mostly evolved away. I don't know who the man is (...