A Question of Logic Temporarily Postponed- Discussion inside

Papa Shango

Im very sorry about this guys, but the site where i get my logic questions from has decided to go down. Its been down since yesterday afternoon, thus there not being a Q of logic last night.

If and when it surfaces again i shall continue running it. But until then its out of my hands.


The results still stand the same as no one could answer the Train Question. I'll post the answer later.


Results:
Mister D: 2 points
Idaman: 2 Points
3D: 1 Point
Good Ol JP: 1 Point
JM: 1 Point



Thread is now open to ponder the following...

I have 3 unmarked, oblique envelopes. In one of them i have placed a 50 dollar bill. I shuffle them up and give you ONE of the envelopes while i keep the other two.

You cant look inside your envelope, but I can look inside my two and discard one empty envelope. (If one of mine has the bill i discard the empty one, if both are empty i discard a random one)

I then offer you a trade, my undiscarded envelope for your unseen envelope. Will swapping envelopes increase your odds of obtaining the 50 dollars? Or wont it make a blind bit of difference.

Discuss which answer you think applies and why. This puzzle has created alot of controversy between various thinking parties.

No need to PM this one, its not for scoring as there isnt really a solid answer.. you may all post it here.

AudioSavior

The answer is...mWo4LIFE!

Dr. Giganto

yes, you have a better chance.

to start out, each envelope has a 1/3 chance of having the bill. So when you get the first envelope , you have a 1/3 chance of having the bill

There is a 2/3 chance that the bill is in the other person's possession. After discarding of one envelope, the chance of that envelope having the bill is zero. the odds must still add up to one, so there is still a 2/3 chance of the other envelope having the bill. So, by switching envelopes, you have a better chance of having the bill

Another way to look at it is like this: By switching, you are in essence taking the two other envelopes. you already knew that one of them didnt have a bill, so the fact that one of them is discarded is inconsequential. there is a 2/3 chance that the bill is in one of those two envelopes, and an empty envelope will be discarded regardless

AudioSavior

When you switch, the odds change.

Mr. Hyde

On a side note, D12's new LP comes out at the end of April. With a possible tour (including Eminem) this summer. Thanks!

Freak

It makes zero difference.

Papa Shango

So what if it were to change to me having 100 envelopes and i gave you one?

Surely the odds still arent 50-50