RIDDLE no. I forgot to keep track. lets say 10

[WM]Szeweningen is creating a champions league tournament.
He tells you to pick a letter: A, B or C. Each letter represents a group, of which two happen to be extremely difficult and one is rather easy.
You decide to pick B. After you choose B, szeweningen reveals the group A to you, containing the following players: Timinator, [WM]Piggy, Luxis*apex, Frankdeslimste*apex. After that he gives you the option to change your prior pick towards C or stick with group B, in any case your decision has to be final.
What do you do assuming you want to have the best chances for an easy group?

I created a mini poll for this, but i was to inept to add it into the thread.
But here is the link in case you want to vote there too.

http://poll.pollcode.com/szgxg

Stay the same, having 2 accounts in the same tournament is a massive advantage, and would make almost any group an easy group.

Ye old M H problem (initials shouldn't spoil the answer).

you switch groups.
see, at first you had `1/3rd chance to pick the easy group.
after your pick, [WM]Szewingen reveals one of the two groups you didn't choose, i m assuming that *if* group A was the easy group, he would 've shown group C, as to not reveal which is the easy group.
If he does it this way, the chance that group C is the easy group is 2/3rd,
because 1/3rd chance is still saying group B is the easy group, but 2/3rd chance says group B isn't the easy group, and he already showed you group A not being the easy group.
(he could also not care about which group he shows, in that case it doesn't matter, as long as you don't pick group A)

(pffft, i hope this wall-o-text makes sense :P )

Yes, your solution is correct (although to fully explain it you should say that 1/3*0+2/3*1=2/3>1/3). It is called the Monty Hall problem or Monty Hall paradox.

incorrect.
The correct answer was:
I am too dumb for this.

Correct answer is: Doesn't matter which group it is

I'll go for team A

The tournament is not a 1vs1 strat so facing Dead Piggy is already an easy win, Timinator is likely to get booted and one of the apex guys will have a bad day.
3 wins means you qualify for the next round = score

I didn't read your quiz first, and it seems you got there first. I retract my smart ass answer and put my thinking cap on.

This isnt the Monty Hall problem, you autist. I hate it when people dont read the question, they just see what they want to see. "Oh, I recognise this pattern, I will just sit here and bask in my own smug satisfaction at knowing the proof off the top of my head, rather than critically evaluate what is in front of me". And then you bust out some algebra for the ladies.

The difference is, in TMHP the person asking you whether you want to switch (sze) lays out the rules first, most importantly that he will reveal the players in a group you dont pick. In this case sze could have been going to reveal group A's players no matter what you picked.

So I suppose its the 3rd option.

Strategic 1v1 is not the template I am best at, and you will never have an easy win against me stinky aranka.

Wow piggy, you get more stupid by the minute, you try to lecture me on game theory in one of the most famous problems... It is not relevant in the monty hall problem whether or not you know beforehand you will have the opportunity to switch or not, the only thing important to the decision making process is the fact that you get the opportunity to switch. Even if the group that is revealed is fixed (for example A group) given that yuo have no prior information to the competition (making your initial choice perfectly random) you will want to switch.

I) The group revealed is fixed initially, suppose A:
Ia) A is easy ---> 1/3 chance to stay (if you pick initially A), 2/3 chance to switch
Ib) A is hard ---> if you pick A you will always switch, if you pick B or C switching is irrelevant at this point IF you know that you are in position Ib

II) The group revealed is fixed after your initial choice:
You should switch, explanation above.

Since you have no initial information about how the host (in that version me) decided too choose groups it is obvious the dominant strategy is switching since you know Ia was ruled out.

bullsht. i see no paradox here. the odds change from 1/3 1/3 1/3 to 1/2 1/2 for me and i stick to what i've already chosen (regardless whether the names in A are considered one of the stronger groups or not - if they are the weaker, then i care even less, because i would not be lucky anyway)

All you know when he offers you to switch or not, is that there is a hard and an easy group left between group B and C. You have no other information. You have no reason to think that the group you have already picked once is either hard or easy.

to be a bit more clear, i 've seen the same-kind of riddle, and usually the rule is that the quizzer shows you an option you do *not* want to choose, meaning that if you didn't choose the option you wanted(2/3rd chance), going for the left-over option gives you the best option.
thoough myhand wasn't clear on on what grounds [WM]swezingen chose to reveal group A, so it could just as well not matter at all.

if myhand is too dumb, sze is autistic and piggy is "more stupid" by the minute, who is the least intelligent and who is the most intelligent?

I am not more stupid by the minute. Like the rest of his post, Sze based that statement off some incorrect assumptions.

incorrect. hint: autism.

Read what I wrote again... the fact that you don't understand it does not make it wrong.

"All you know when he offers you to switch or not, is that there is a hard and an easy group left between group B and C. You have no other information. You have no reason to think that the group you have already picked once is either hard or easy."

You have the information that there is a 1/3 chance that B is easy, and a 2/3 chance that C is easy, so there's your reason to think that the group you already picked is hard.

I'll stay in the same group. I get to play 4 top players and if i'm lucky, I'll win maybe 1 or 2, then i'll just show them to qi who immediately thinks i'm boasting and gets pissed off.

Riddle 11

3 players, A,B,C decide to play a round robin. A beats B in 5 turns, B beats C in 8 turns, C beats A in 40 turns. Whos the best player?