# Search results

1. ### How do you all like this theme?

Lynk I like it, but I don't think it's good to change this one. Anyway, it's only \$10 - so considered it for some of my forums. In fact, a group of my friends have made this one: ForumLife.Fun
2. ### Probability of Independent Event

Bag 2 is increased overall by 1 and the orange amount in the bag 2 is increased by 1. Note, this stuff is based on another problem I saw in a textbook.
3. ### Probability of Independent Event - 2

One bag has 2 orange balls and 1 grey ball. Another bag has 10 orange balls and 6 grey balls. What is the chance after one ball is moved from one to the other - that one picked ball in the 2nd group is orange? Choice 1 is orange and Choice 2 is grey. OK, @MarkFL, would we simply use the same...
4. ### Probability of Independent Event

Probability of Single Choice 2 in Group 2 = (Amount of Choice 1/Amount of Group 1)(Amount of Choice 1/Amount of Group 2) + (Amount of Choice 2/Group 1)(Amount of Choice 2/Amount of Group 2) @MarkFL Well, we are assuming two groups and two choices, but what if there were more groups and/or...
5. ### Poisson and Guassian

https://www.physics.harvard.edu/uploads/files/undergrad/probweek/sol84.pdf Here is the the solution. Thoughts?

12. ### Game of NIM

https://www.physics.harvard.edu/uploads/files/undergrad/probweek/prob90.pdf Anyone solve or have some ideas?
13. ### Integration by Parts - What to choose?

Yeah, I recall that one now.
14. ### Integration by Parts - What to choose?

\int\,u\,d(v) = u\,v\, - \int\,v\,d(u) How to choose which one is u and which one is v?
15. ### How did this solution come about?

The one on here: Challenge - Solve for x I know it was from solving for r and r did give 1, and 2 as answers, but only one of those gave a solution like what came about - if you know what I mean.
16. ### Challenge Solve for x

Yeah \dfrac{10^{3r}}{10^{2}} = 10^{3r}(10^{-2}) = 10^{3r + (- 2)} = 10^{3r - 2}
17. ### Challenge Solve for x

in the part 10^{3r - 2} where did the minus 2 come from?
18. ### Making a Directory Using phpBB

I hope I can pull this off. Well, I want to use a paid mod and XenForo, but it's simply too expensive at the moment and also I want to make many directories. So I have some domains like MathLesson.us, BassLesson.us, GuitarLesson.xyz and nothing to do with them really. Some of them used to be...
19. ### Curing Cancer

Why cancer has not been cured Any thoughts on what needs to be done?
20. ### Sand Pile Volume

What mistakes were made in my attempt, aside from not going from the inside out?