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Riddle:

Two women and two doctors walk into an ice cream parlor. They each order an ice cream cone. When their ice creams come, there is only 1 strawberry,1 chocolate and 1 vanilla.

How come they didn't complain?

Answer:

One of the women was a doctor!

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Riddle:

Three cars had driven into a parking lot at the same time, and the three drivers left them all for the attendant to park. Unfortunately, he isn't too good at remembering exactly which driver drove which car. However, he is sure of these 6 facts: a. Colin drove the BMW if and only if Mr. Cooper drove the Avenger. b. Alan drove the Cortina if and only if Mr. Cooper drove the BMW. c. Colin is Mr. Brown if and only if Mr. Andrews drove the BMW. d. Brian is Mr. Andrews if and only if Colin drove the BMW. e. Mr. Cooper drove the Avenger if and only if Alan is Mr. Brown. f. Colin is Mr. Brown if and only if Alan drove the Cortina. Who arrived with which car?

Answer:

Brian Brown drove the BMW, Alan Andrew drove the Avenger, and Colin Cooper drove the Cortina.

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Riddle:

I have three envelopes, into one of them I put a $20 note. I lay the envelopes out on a table in front of me and allow you to pick one envelope. You hold but do not open this envelope. I then take one of the envelopes from the table, demonstrate to you that it was empty, screw it up and throw it away. The question is would you rather stick with the envelope you have selected or exchange it for the one on the table. Why? What would be the expected value to you of the exchange?

Answer:

The answer might seem a little counter intuitive at first but we'll see...
The short answer is that it is in your advantage to exchange. But why?
Well initially there was a 1/3 chance that you were holding the envelope with the note in it and a 2/3 chance that the note was on the table.
This is still the case after one of the envelopes on the table has been removed, there is still a 1/3 chance that you have the note and a 2/3 chance of it being on the table.
If this is confusing then it may help to think that the questioner knows which envelope the $20 note is in, though in practice it doesn't actually matter. The questioner would always be able to demonstrate that the note was not in one of the envelopes on the table regardless of where the note was, so the fact that he was able to do this changes nothing.
Consider a different example....
Say there are a 1000 envelopes on the table, 1 with a note inside. You pick 1 envelope, the chance that this has the note in it is clearly 1/1000, where as the chance that it is still on the table is 999/1000. Odds are its on the table. Now the questioner could, assuming he can remember where the note is demonstrate to you that the note is not in 998 of the envelopes on the table. In this case nothing would have happened to change the fact that there is only a 1/1000 chance of you having the note.
That is why you exchange.
What is the value of the exchange?
Simply before the exchange you have 1/3 of $20 and afterwards you will have 2/3 of $20, ie the advantage to you is about $6.66

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Riddle:

If you have two quarters on a table touching each other, how can you move one of the quarters without touching it? You are only allowed to touch one quarter but not move it. You cant touch the quarter that you move. You want to get at least enough room between the two quarters to insert another coin between the two quarters.

Answer:

Hold down one of the quarters very firmly. Take another coin and hit it against the quarter you are holding down. Tap hard enough to move the quarter next to it aside.

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Riddle:

George was cleaning the windows on the eighteenth floor of an office block when there was a massive power failure. The electric hoist on his platform was immoblized.

So how did he manage to get down before the power was restored?

Answer:

George walked down the stairs. He was cleaning the inside of the windows.

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Riddle:

You and your friend are trapped in a space prison on an alien planet. The alien warden decides to give you and your friend a chance at freedom. He states that your friend shall be allowed to temporarily leave your cell and try to escape through an electric gate guarded by a 3-number passcode. If your friend answers incorrectly or says anything but the final answer, your friend will be thrown back in the prison. A computer will then tell your friend 4 clues if requested. If this passcode is properly answered, you and your friend shall be freed. You are then blindfolded and your friend leaves. You hear your friend walk down one of the numbered hallways to the gate. Your friend asks for the first clue. A voice answers, "The numbers are in ascending order so that the number is greater than or equal to the number before it." Your friend asks for the second clue. The voice says, "The product of the 3 numbers is 36." Your friend asks for the third clue. The voice says, "The sum of the numbers is the number of the hallway you entered." Your friend pauses for a moment and thinks. Your friend then asks for the fourth and final clue. The voice says, "The largest number only appears once in the code." You hear a beep. You hear your cell door swing open. You are free! What was the code?

Answer:

2,2,9

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Riddle:

Two hours ago it was as long after one o'clock in the afternoon as it was before one o'clock in the morning. What time is it now?

Answer:

It would be 9:00 pm. There are 12 hours between 1:00 pm and 1:00 am and half of that is six hours. Half-way between would be 7 o'clock. Two hours later it would be 9:00 o'clock.

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Riddle:

What animal has no wings, but yet will fly?

Answer:

A caterpillar has no wings, but will fly when it matures and becomes a butterfly.

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Riddle:

If a man is trapped in a room. There are no doors no windows how did he get out?

Answer:

Through the door way, there are no doors but a door way!

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Riddle:

Did you hear about the soilder who bought a camouflage sleeping bag?

Answer:

He can't find it

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