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Google it, read, or even better go do the card experiment, see for yourself! It works that way!

Is this a troll site? Your "logic" is just plain wrong.

"The prize did not move, so each door, and the contestant, keep the one-third chance of being correct."

Incorrect: odds = good prize/# of doors. With one door gone the odds have changed from 1/3 to 1/2.

"It treats the situation as if the contestant had not made the first choice at all."

Correct: The "first choice" has nothing to do with the odds of the SECOND round. That is the `Gamblers Fallacy`, ok?

In the second round there are 2 doors and one prize, period. The first round is irrelevant.

I posted that there :-) because this is the truth.

Here`s also logical proof that it actually works.

Was offered with the incorrect answer to Q#11.

The logic flaw is at 2:50. The "first round" has >>absolutely nothing<< to do with the odds of the "second round" which remain 50-50 no matter how many previous rounds there are!

In R-1 there`s always a non-chosen goat to show you. This `problem` presumes the host knows where the car is. He can always show you a goat, but it`s just "for show" and has NO effect on you winning or losing.

The "1 in 3" odds of the first round are for the >>whole game<< but the second round is 50-50. Two entirely different things!

Sometimes called the "Gamblers Fallacy". look it up.

3:29 No, that is all wrong.

@paperduck: No, it`s still 50-50. There`s only 2 outcomes and both are equal.

The `3rd box` is just a decoy.

Removing the `other goat` is a distraction: when there`s 2 boxes? There`s 1 car and 1 goat? It`s 50-50. That is all.

Those "proof videos" are trolling the general public, they are wrong.

-Flip 5 tails in a row or get your head cut off

-Roll snake eyes or eat cyanide for dinner

-Roll a 7 twice in a row or be drawn and quartered

-Get dealt 2 aces (standard 52 card deck; 2 cards dealt) or jump from the top of the Empire State Building

Obviously the snake eyes is the correct one, because there is no mention of how many times you get to try it, whereas every other one has a condition "In a row" "2 cards dealt", yet it was marked wrong.

Smarter than 95.39% of humans. But we knew that already, yes?

#7 was wrong. I thought it was a quotation from James Joyce...

#11 Their answer is incorrect. With 1 goat gone the remaining doors are exactly 50-50 for the goat/car. There`s only 2 possibilities!

(I totally guessed #12)

#17 Is just stupid...

Got #18 correct by eliminating answers 3 & 4 and guessed the beer.

I got #20 correct! Hooray! Really I got 18/20, so there!

Pi was correct. It asked for the first four figures of Pi, not Pi to four significant figures. The first four are 3, 1, 4 and 1.

It was too US-centred, but also two questions were simply tricks. One was just not right (AEIOUY? Since when has third spot meant third letter? Meaningless) and another had no question unless you noticed a trick.

So my 16 was not bad.

I refused to google anything, and solve these just using brain and caculator. (and, dumb me, I had finished the test when I remembered I had a BIG-ASSED WORLD MAP on my wall I could have used for a couple).

Missed

1) Best chance of survival (should have calculated that one out)

7) Read every third spot young. (started counting on the wrong word)

8) Warsaw (always was bad at geography).

10) Saxet, Texas (WAG, didn`t recongize it as a palindrome)

16) Empire State Walk (WAG)

18) bottles of Rolling Rock (misscalculated Duece, and don`t drink Rolling Rock)

You didn`t need to know how tall the Empire State building is, just that walking horizontally is a lot faster than climbing stairs. I don`t know how I was supposed to know the value of platinum off the top of my head but I suppose the preppers would.

I should know that the ESB has around 100 stories? Well, I didn`t, but I sure do now since this is the kind of stuff my brain soaks up like a sponge, instead of what I should have learnt in classes.

A roof is a roof because it was intended and constructed as a roof, and fills a different function than a wall. A wall intended and constructed as a wall but pointing upwards is still a wall but may function as a roof, just not as well.

And again, if we are to interpret it the way you did you can`t walk to the roof at all, you need to climb.

19/20 for the second go.

I reckon I could get 100% on the third go.

In 47 minutes, guessing on five of them. I still think most of these quizzes are too US-centric, I don`t know the height of the Empire State, nor how many points an american handegg goal gives.

The pi backwards is wrong too, it should be 241.3 not 141.3, since the following number (preceeding?) is a 9.

and i guessed most of em..

The Impossible Test

- Following my last place at the science quiz I tried this. 12/20