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Math and logic riddle thread
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  Tamari  




 
 
    
 

Post Thu, Oct 08 2020, 9:05 pm
doodlesmom wrote:
Hidden: 

So my answer is within the rules, when they need to answer which color hat is on their head, the can say it loudly if the person in front of them is wearing red, or answer their answer quietly to indicate that the person in front of them is wearing blue...


Sorry, I didn't understand your answer first time around.....
Clever solution, I must say! I'm assuming the warden must've not allowed them to answer quietly, since the actual solution is different..... LOL
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  doodlesmom  




 
 
    
 

Post Thu, Oct 08 2020, 9:07 pm
Tamari wrote:
Sorry, I didn't understand your answer first time around.....
Clever solution, I must say! I'm assuming the warden must've not allowed them to answer quietly, since the actual solution is different..... LOL


Hidden: 

I figured they may only say Exactly blue or red and that is why I chose My solution over the other one. (That is why I originally asked if they can add words)
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  ExtraCredit  




 
 
    
 

Post Thu, Oct 08 2020, 9:31 pm
Tamari wrote:
Sorry, I didn't understand your answer first time around.....
Clever solution, I must say! I'm assuming the warden must've not allowed them to answer quietly, since the actual solution is different..... LOL

I’m ready for the answer to this one!
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  Tamari  




 
 
    
 

Post Thu, Oct 08 2020, 9:43 pm
ExtraCredit wrote:
I’m ready for the answer to this one!


Hidden: 

The prisoners come up with the following plan: If the first prisoner to speak—the one in the back of the line—sees an even number of blue hats, he'll say BLUE, if he sees even number of red hats he'll say RED. He has a 50% chance of survival. Next prisoner counts if there's an even amt of the color first prisoner said in front of HIM, that will mean he has the other color, if there's odd amount, then he must have that color to make it even. Every prisoner now has to keep track of the one's behind them too one by one, plus counting the ones in front of them, always bearing in mind that the total amt of the color first prisoner said is even.


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  ExtraCredit  




 
 
    
 

Post Thu, Oct 08 2020, 9:45 pm
Tamari wrote:
Hidden: 

The prisoners come up with the following plan: If the first prisoner to speak—the one in the back of the line—sees an even number of blue hats, he'll say BLUE, if he sees even number of red hats he'll say RED. He has a 50% chance of survival. Next prisoner counts if there's an even amt of the color first prisoner said in front of HIM, that will mean he has the other color, if there's odd amount, then he must have that color to make it even. Every prisoner now has to keep track of the one's behind them too one by one, plus counting the ones in front of them, always bearing in mind that the total amt of the color first prisoner said is even.



Oh goodness this is brilliant!
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  Tamari  




 
 
    
 

Post Thu, Oct 08 2020, 9:50 pm
ExtraCredit wrote:
Oh goodness this is brilliant!


Duh, why can't I figure our ur hello but not hi pattern?
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  ExtraCredit  




 
 
    
 

Post Thu, Oct 08 2020, 9:54 pm
Tamari wrote:
Duh, why can't I figure our ur hello but not hi pattern?

I gave some hints there. It was too tricky.
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  ExtraCredit  




 
 
    
 

Post Mon, Oct 12 2020, 6:08 pm
We need something new here.
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  Tamari  




 
 
    
 

Post Mon, Oct 12 2020, 7:47 pm
Alice and Barbara together can finish a project in 3 hours.
Barbara and Cindy together can finish the same project in 4 hours.
Alice and Cindy together can finish it in 6 hours.
How long will it take them to finish this project if they all three work on it together? (Considering that everyone consistently works at her own pace)
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  ExtraCredit  




 
 
    
 

Post Mon, Oct 12 2020, 8:03 pm
Tamari wrote:
Alice and Barbara together can finish a project in 3 hours.
Barbara and Cindy together can finish the same project in 4 hours.
Alice and Cindy together can finish it in 6 hours.
How long will it take them to finish this project if they all three work on it together? (Considering that everyone consistently works at her own pace)

Hidden: 

2 hours 10 minutes?
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  Tamari  




 
 
    
 

Post Mon, Oct 12 2020, 8:16 pm
ExtraCredit wrote:
Hidden: 

2 hours 10 minutes?

No. Curious how you got to that answer though.
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  ExtraCredit  




 
 
    
 

Post Mon, Oct 12 2020, 8:18 pm
Tamari wrote:
No. Curious how you got to that answer though.

Hidden: 

I took the time it takes each of them. Added it up and divided in 3 for an average.
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  Tamari  




 
 
    
 

Post Mon, Oct 12 2020, 8:20 pm
ExtraCredit wrote:
Hidden: 

I took the time it takes each of them. Added it up and divided in 3 for an average.


Hidden: 

Average doesn’t give u accurate
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  pause  




 
 
    
 

Post Mon, Oct 12 2020, 8:27 pm
ExtraCredit wrote:
Hidden: 

I took the time it takes each of them. Added it up and divided in 3 for an average.

You would need to state the time for the person whom it takes longest since they're all working at the same time. I'm lazy now to think, but you're on the right track, I think. Wink
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  ExtraCredit  




 
 
    
 

Post Mon, Oct 12 2020, 8:29 pm
pause wrote:
You would need to state the time for the person whom it takes longest since they're all working at the same time. I'm lazy now to think, but you're on the right track, I think. Wink

That doesn’t make sense because the quicker workers should make up for the slower workers.
And it should take quicker than the first scenario if a third person is helping.
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  Tamari  




 
 
    
 

Post Mon, Oct 12 2020, 8:33 pm
pause wrote:
You would need to state the time for the person whom it takes longest since they're all working at the same time. I'm lazy now to think, but you're on the right track, I think. Wink


Given the info, You tell me who it takes the longest.
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  malki2  




 
 
    
 

Post Tue, Oct 13 2020, 7:17 am
Here’s my answer:
Hidden: 

2 hours 40 min
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  ExtraCredit  




 
 
    
 

Post Tue, Oct 13 2020, 7:18 am
Tamari wrote:
Given the info, You tell me who it takes the longest.

Hidden: 

This one is easy. Cindy
.
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  ExtraCredit  




 
 
    
 

Post Tue, Oct 13 2020, 7:19 am
malki2 wrote:
Here’s my answer:
Hidden: 

2 hours 40 min

How u got here? Scratching Head
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  tothepoint  




 
 
    
 

Post Tue, Oct 13 2020, 7:23 am
ExtraCredit wrote:
Hidden: 

This one is easy. Cindy
.


Y Cindy? I think Barbara
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