ITT we ask easy riddles/questions that people screw up

[supermousie]

Re: ITT we ask easy riddles/questions that people screw up

Yes, he's right.

Three people sharing in 8 loaves = 8/3 loaves per person.
Traveler one is giving up 5-8/3 = 2.33333 loaves
Traveler two is giving up 3-8/3 = 0.33333 loaves

In other words, traveler one is contributing a relative 7 times the amount of bread than traveler 2 is. Therefore he should get 7 times the compensation.

7x+x = 8, 8x = 8, x = 1

Give 1 coin to traveler 2, and 8-1=7 coins to traveler 1

I'm sorry, I completely lost focus in the riddle the second I realised you changed your avatar.

[Reincarnate]

Re: ITT we ask easy riddles/questions that people screw up

May as well post the famous Monty Hall problem (if you haven't heard this before, don't cheat -- it's a fun problem):

You are in a game show and three doors stand before you. The host tells you that behind those doors will be two goats and a brand new sports car. The host knows which prize is behind which door, and the prizes never change positions once the game has started.

You get to point to a door of your choice. But instead, the host opens *another* door revealing a goat behind it. The host then gives you a choice. You can either continue onward and open the door you initially chose/pointed to, or you can open the other door that hasn't been opened yet.

Do you stay or switch and why?

[Sweet_Feet]

Re: ITT we ask easy riddles/questions that people screw up

Riddle me this: Is it possible to build a house which has all windows facing south?


easier riddle my prof asked earlier this week

[Bluearrowll]

Re: ITT we ask easy riddles/questions that people screw up

Yes, he's right.

Three people sharing in 8 loaves = 8/3 loaves per person.
Traveler one is giving up 5-8/3 = 2.33333 loaves
Traveler two is giving up 3-8/3 = 0.33333 loaves

In other words, traveler one is contributing a relative 7 times the amount of bread than traveler 2 is. Therefore he should get 7 times the compensation.

7x+x = 8, 8x = 8, x = 1

Give 1 coin to traveler 2, and 8-1=7 coins to traveler 1

Congrats

And Flipsta, that picture continues to give me problems. I can look at it for minutes and think that squares A and B must be different colours, but then I put the 2 squares side by side, and they look alike, and to further compare,
they're both Hue: 160 Sat: 0 and Lum: 113 with 120 RGB apiece.

[i love you]

Re: ITT we ask easy riddles/questions that people screw up

May as well post the famous Monty Hall problem (if you haven't heard this before, don't cheat -- it's a fun problem):

You are in a game show and three doors stand before you. The host tells you that behind those doors will be two goats and a brand new sports car. The host knows which prize is behind which door, and the prizes never change positions once the game has started.

You get to point to a door of your choice. But instead, the host opens *another* door revealing a goat behind it. The host then gives you a choice. You can either continue onward and open the door you initially chose/pointed to, or you can open the other door that hasn't been opened yet.

Do you stay or switch and why?

I would switch because during the first choice, you had a 1/3 chance of winning the car. When the host reveals one of the goats, your chances are now up to 2/3 if you switch i would think since the prizes never changes position.

I don't know. I'm pretty bad at riddles xD

[iironiic]

Re: ITT we ask easy riddles/questions that people screw up

Two trains, 160 miles away, are approaching each other from opposite directions: one going 30 mph and the other going 50 mph. Starting at the first train (one that's going 30 mph), the fly travels 70 mph to the other train, turns around and travels 70 mph back to the first train. It repeats this process until the trains collide and the fly dies. How many miles did the fly travel before its death?

[Emithith]

Re: ITT we ask easy riddles/questions that people screw up

Either the two goats and the car are in the same door and the other two are filled with nothing, or he showed you the goat door to scare you away from the car, that's what I think.

[emerald000]

Re: ITT we ask easy riddles/questions that people screw up

Two trains, 160 miles away, are approaching each other from opposite directions: one going 30 mph and the other going 50 mph. Starting at the first train (one that's going 30 mph), the fly travels 70 mph to the other train, turns around and travels 70 mph back to the first train. It repeats this process until the trains collide and the fly dies. How many miles did the fly travel before its death?

I feel I am missing something here, but here I go anyway.

The trains collide in 2 hours. The fly goes at 70 mph. So it travels 140 miles.

[iironiic]

Re: ITT we ask easy riddles/questions that people screw up

I feel I am missing something here, but here I go anyway.

The trains collide in 2 hours. The fly goes at 70 mph. So it travels 140 miles.

Well done (:

[UserNameGoesHere]

Re: ITT we ask easy riddles/questions that people screw up

Only if you're ridiculously unfamiliar with any math, and don't know PEMDAS?

Or, like I said, if you actually use math for real world problems rather than just an exercise. I'm going to go ahead and assume you haven't.

Anyone who has any amount of experience with multiple programming languages, programming for multiple environments (porting/etc...), or even just different compilers for the same language can tell you that different languages and even different compilers of the same language can interpret things differently and not necessarily mathematically-speaking strictly correctly. To avoid problems, if in doubt, parentheses it out.

Alternately, if you're working with other people in some manner with calculations (scientists, engineers, business folks, government, etc...) you will want to be as clear as possible as even a single digit of error can be disastrous for real-world projects. Just because it is obvious to you does not mean it will be to others.

Sorry if this reeks of snark but so did your implication.

If you have access to both a TI-85 and a TI-86 try it on both -- they provide different answers. Case in point.

[Sweet_Feet]

Re: ITT we ask easy riddles/questions that people screw up

May as well post the famous Monty Hall problem (if you haven't heard this before, don't cheat -- it's a fun problem):

You are in a game show and three doors stand before you. The host tells you that behind those doors will be two goats and a brand new sports car. The host knows which prize is behind which door, and the prizes never change positions once the game has started.

You get to point to a door of your choice. But instead, the host opens *another* door revealing a goat behind it. The host then gives you a choice. You can either continue onward and open the door you initially chose/pointed to, or you can open the other door that hasn't been opened yet.

Do you stay or switch and why?

I first heard this riddle in the movie 23 21.. still don't quite understand the whole concept of variable change but I like the idea of it.

[benguino]

Re: ITT we ask easy riddles/questions that people screw up

Riddle me this: Is it possible to build a house which has all windows facing south?


easier riddle my prof asked earlier this week

Build the house on the north pole

[Reincarnate]

Re: ITT we ask easy riddles/questions that people screw up

Two trains, 160 miles away, are approaching each other from opposite directions: one going 30 mph and the other going 50 mph. Starting at the first train (one that's going 30 mph), the fly travels 70 mph to the other train, turns around and travels 70 mph back to the first train. It repeats this process until the trains collide and the fly dies. How many miles did the fly travel before its death?

Trains:
rt+Rt = d
30*t + 50*t = 160
80t = 160
t = 2

Bee:
rt=d
70*2 = 140

140 miles

[iironiic]

Re: ITT we ask easy riddles/questions that people screw up

You walk along a yellow brick road (lmfao) to try and find a pot of gold. On your journey, you met two leprechauns standing in front of two diverging paths, one which has the pot of gold at the end of the path. One of them tells the truth all the time, and the other lies all the time. They will only let you ask one question to any one of them. What question should you ask?

EDIT: Good job Marcus!

[Reincarnate]

Re: ITT we ask easy riddles/questions that people screw up

I first heard this riddle in the movie 23 21.. still don't quite understand the whole concept of variable change but I like the idea of it.

It has to do with Bayes Rule, which tells you how probabilities change when something is given/known.

Basically, when you have three doors, you have a 33.3% chance of landing on the car by chance alone. But by having a goat-door revealed to you, you now have more information that you must take into account.

Another way to intuit this:

Say instead of 3 we have a billion doors. You choose a door. The host opens up 999,999,998 goat-doors. You can either open the door you chose or go with the other unopened door.

Do you see why it's obvious we should switch? In this case, the probabilities are easier to understand. The odds of us choosing the car-door right off the bat are practically zero. Therefore if we are shown where all the other goats are and we are given an unopened door, odds are that's the one with the car. The only way we lose by switching is if we just so happened to pick the door with the car right off the bat.

The same logic applies with three doors -- it's just harder to see at first. Switching gets us the car two times out of three:

1. We choose goat 1 at first. Goat 2 revealed. Switch, we get car.
2. We choose goat 2 at first. Goat 1 revealed. Switch, we get car.
3. We choose car at first. Goat 1 or goat 2 revealed. Switch, we get goat.