Question for math/stats guys

[jamesave]

20*19*18*17*16

 

[George P Burdell]

Originally posted by: 2Xtreme21
20 C 5 = 20! / (20-5)!

Right?

nPr = n!/r!

What you need for this problem is nCr, which is = n!/r!(n-r)!

 

[Billb2]

There's only two kinds of potato chips ..Regular and Bar-B-Q.

Well, there's these too. Yummmmmm.....

 

[Chronoshock]

Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

 

[her209]

42

 

[ICRS]

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip (5)
4 of the same and 1 different (4+1)
3 of the same, 2 of the same (3+2)
3 of the same, and 2 different (3+1+1)
2 of the same, and 2 of the same, and 1 different (2+2+1)
2 of the same and 3 different (2+1+1+1)
5 different. (1+1+1+1+1)

More hint
(20p1)/1!
(20p2)/1!1!
(20p2)/1!1!
(20p3)/1!2!
(20p3)/2!1!
(20p4)/1!3!
(20p5)/5!


THIS IS HOW YOU SOLVE IT WITH REPLACEMENT, BUT APPARENTLY THE OP QUESTION IS WITHOUT REPLACEMENT.

 

[QED]

Originally posted by: ICRS

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip
4 of the same and 1 different
3 of the same, 2 of the same, and 1 different
3 of the same, and 2 different
2 of the same, and 2 of the same, and 1 different
2 of the same and 3 different
5 different.

I hope your math is better than your reading comprehension. The OP clearly stated that he had to get 5 (and here's the key word!) different bags of chips.

I'll even highlight it for you:

Originally posted by: BlancoNino
A person going to a party was asked to bring 5 different bags of chips. Going to the store, she finds 20 varieties.

How many different selections can she make?

 

[George P Burdell]

Originally posted by: QED

Originally posted by: ICRS

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip
4 of the same and 1 different
3 of the same, 2 of the same, and 1 different
3 of the same, and 2 different
2 of the same, and 2 of the same, and 1 different
2 of the same and 3 different
5 different.

I hope your math is better than your reading comprehension. The OP clearly stated that he had to get 5 (and here's the key word!) different bags of chips.

:thumbsup:

 

[ICRS]

Originally posted by: QED

Originally posted by: ICRS

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip
4 of the same and 1 different
3 of the same, 2 of the same, and 1 different
3 of the same, and 2 different
2 of the same, and 2 of the same, and 1 different
2 of the same and 3 different
5 different.

I hope your math is better than your reading comprehension. The OP clearly stated that he had to get 5 (and here's the key word!) different bags of chips.

I'll even highlight it for you:

Originally posted by: BlancoNino
A person going to a party was asked to bring 5 different bags of chips. Going to the store, she finds 20 varieties.

How many different selections can she make?

Woops brain fart. I read

Originally posted by: herm0016
that would be one of the outcomes.

and thought the OP posted this response.

I wasted all my time giving the solution with replacement. Damn it.

 

[Chronoshock]

Originally posted by: ICRS

Originally posted by: QED

Originally posted by: ICRS

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip
4 of the same and 1 different
3 of the same, 2 of the same, and 1 different
3 of the same, and 2 different
2 of the same, and 2 of the same, and 1 different
2 of the same and 3 different
5 different.

I hope your math is better than your reading comprehension. The OP clearly stated that he had to get 5 (and here's the key word!) different bags of chips.

I'll even highlight it for you:

Originally posted by: BlancoNino
A person going to a party was asked to bring 5 different bags of chips. Going to the store, she finds 20 varieties.

How many different selections can she make?

Woops brain fart. I read

Originally posted by: herm0016
that would be one of the outcomes.

and thought the OP posted this response.

I wasted all my time giving the solution with replacement. Damn it.

Back to the topic at hand, who likes salt and vinegar chips?

 

[ICRS]

Originally posted by: Chronoshock

Originally posted by: ICRS

Originally posted by: QED

Originally posted by: ICRS

Originally posted by: Chronoshock
Since the answer has already been covered, I thought I should mention I had salt and vinegar chips for lunch (with pizza). S&V seems to be pretty polarizing, you either love them or hate them.

No one here has posted the correct answer. All of the answers so far are without replacement, however is question is with replacement. I know how to solve this, but I am busy right now to explain it, but I will give a hint.

Here are possible events:
5 of the same chip
4 of the same and 1 different
3 of the same, 2 of the same, and 1 different
3 of the same, and 2 different
2 of the same, and 2 of the same, and 1 different
2 of the same and 3 different
5 different.

I hope your math is better than your reading comprehension. The OP clearly stated that he had to get 5 (and here's the key word!) different bags of chips.

I'll even highlight it for you:

Originally posted by: BlancoNino
A person going to a party was asked to bring 5 different bags of chips. Going to the store, she finds 20 varieties.

How many different selections can she make?

Woops brain fart. I read

Originally posted by: herm0016
that would be one of the outcomes.

and thought the OP posted this response.

I wasted all my time giving the solution with replacement. Damn it.

Back to the topic at hand, who likes salt and vinegar chips?

BLAH, LIME chip FTW.

 

[QED]

Originally posted by: Chronoshock

Back to the topic at hand, who likes salt and vinegar chips?

Salt and vinegar chips are the best, but I've often wondered something: every bag of S&V chips I've ever eaten is labeled "artificially flavored". Doesn't anyone make real salt and vinegar chips with real salt and vinegar? Why would you ever use artifiicial flavoring for salt and vinegar? It's not like salt or vinegar is hard to come by...

 

[Chronoshock]

Originally posted by: QED

Originally posted by: Chronoshock

Back to the topic at hand, who likes salt and vinegar chips?

Salt and vinegar chips are the best, but I've often wondered something: every bag of S&V chips I've ever eaten is labeled "artificially flavored". Doesn't anyone make real salt and vinegar chips with real salt and vinegar? Why would you ever use artifiicial flavoring for salt and vinegar? It's not like salt or vinegar is hard to come by...

My guess is that they probably just use some powdered form of acetate to give vinegar flavor since vinegar is really mostly water (> 95%). Its more economical and it'd be tricky to put vinegar on hot oily chips without making them soggy or having the vinegar just roll off.