Recent content by kmwest

FWIW, here's my experience. I started as an English major (yes) and wanted to serve in the military, so I went through a Marine Corps officer program where I participated in two 6-week training sessions in two summers of college. En route, I switched to a Physics major with math and English...

The official answer was the approach PeroK took, which I entered into R as: > choose(156,6)+156*choose(155,4)+(choose(156,2)^2)+choose(156,3) [1] 21916772956 = 21.9 billion

It was in the 21 billion range... what you all said.

It wasn't for me... for a coworker. He just missed the deadline.

You're both right, thanks for the correction. FWIW the contest closed yesterday anyways!

Yes, having 1 repeated brand is like having no repeats and only 5 to pick. Same thing with 2 repeated brands being like no repeats and 4 to pick, 3 repeated brands being like no repeats and 3 to pick.

Hi quick question. I was recently posed a question by a co-worker who saw it in a liquor store contest: 156 different brands of beer for sale You can build your own six pack with any of the 156. How many different ways can you fill the six pack without having the same brand for more than...

Analyzed here: http://datagenetics.com/blog/november22011/index.html

I don't know Matlab but I made a discrete markov function in R, here is the general outline: Define transition matrix (let be named t_mat) Define "result" matrix to be used during matrix algebra, initially set this res_mat= t_mat Let n = number of transitions Let i=1 For i=1 to n...

Interesting, when you type in 'b union c intersection a' into WolframAlpha, it produces a Venn diagram that is equivalent to 'b union (c intersection a)'. So you seem to be right, intersection should be taken first. (Prof hasn't got back to me yet...)

Yes, I'm going to ask the teacher because nothing along these lines were in the text. I doubt it's a typo though, as it happens again in another question! Thanks.

I just made the attached in Paint. This isn't even for a math class, it is part of a reliability engineering course. It is part of an early chapter on basic related math, including probability distributions and very introductory set theory.

There is a bar over the ( A int B U C) , another bar over the latter B, and another bar over everything. But I don't think that would affect the result. I've done Boolean expressions before in a discrete math class (this is just an introductory chapter for a reliability engineering course)...

Hello all. Currently working on simplifying some Boolean expressions, one of the questions is: ( A int B U C) int B I do not know how to go about simplifying the first term because there are not any parentheses within it and I have both the intersection and union symbols. Is there an...

My sister owns a small business and I'm helping update their IT. Right now it's virtually nonexistent. Requirements are small: ~20 users, each with own laptop. All on laptops connected via WiFi to the office wireless router. Employees work off-site nearly all day and come back throughout the...