Search found 5 matches

by brob26
Fri May 22, 2020 1:55 am
Forum: News, Suggestions, and FAQ
Topic: Feature suggestion
Replies: 2
Views: 80

Re: Feature suggestion

It is fairly hidden though. It might be worth making it more visible that clicking the star sorts the thread by kudos...
by brob26
Fri May 08, 2020 1:59 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 371
Replies: 39
Views: 15924

Re: Problem 371

how is "expected to win" defined exactly? the chance of seeing a pair must be >50%? Expanding on Animus ' response, "expectation" here is defined in the statistical sense. The wikipedia page is a good place to start if you haven't encountered the concept previously. I do remember it being a bit con...
by brob26
Sat Apr 11, 2020 11:29 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 711
Replies: 6
Views: 1066

Re: Problem 711

"First, they agree on a positive integer n, and they begin by writing its binary representation on a blackboard."

So for n = 1, they start by writing "1". Then it's Oscar's turn, but his only option is to write another "1", leaving an even number of 1s on the board.
by brob26
Tue Jul 30, 2019 12:46 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 618
Replies: 8
Views: 2546

Re: Problem 618

Your answer for $S(21)$ is wrong- the correct value is roughly a quarter of yours. If it helps diagnose the bug, there are $30$ distinct numbers which have a prime factor sum of $21$; the lowest is $38$, and the largest $2187$.
by brob26
Sun Jan 20, 2019 8:19 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 652
Replies: 1
Views: 684

Re: Problem 652

Can we assume this conjecture for the given N=10^18? If making this assumption leads you to a different answer, then you've disproved the four exponentials conjecture! So either it's fine to assume the conjecture holds for larger N, or you settle a currently unsolved problem in number theory. Eithe...