where are the poisened pills?

[neutralhatter]

As a follow up to Sn0rts post: http://www.blackhatworld.com/blackhat-seo/blackhat-lounge/591138-wheres-missing-dollar.html

Here is my riddle:
I got this riddle when I first went to work for Microsoft as a developer...

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You have regular "weighing scale"... (not a libra scale)

you receive 3 pots of pills.

In each pot there are 100 pills

each pill weighs 10 grams

1 pot has poisened pills, these pills weigh 9 grams a pill

you can only weigh 1 time...

How do you find the poisened pills ?

 

[SkyrocketSEO]

First you said that all the pills ar 10 grams and after that you say that some pills are 9 grams...

 

[Deleted member 658642]

By letting your friend have it first

 

[neutralhatter]

the poisened pills are an exception. 1 pot has poisened pills. they weigh 9 grams each

regular pills weigh 10 grams

poisened pills and regular pills look exactly the same.

 

[E=MC²]

You take 10 pills of the first pot, 6 from the second, and 1 from the last, and you weight the 17 pills at the same time:
-If the weight is 160g, then the 10 pills are poisoned.
-If the weight is 164g, then the 6 pills are poisoned.
-If the weight is 169g, then the 1 pill are poisoned.

 

[Junkfood00]

So do we not have to determine the poisoned ones after weighing? Like are we allowed to mix? Because else, it seems impossible.

 

[Wilson Grant Fisk]

taste them !

 

[neutralhatter]

So do we not have to determine the poisoned ones after weighing? Like are we allowed to mix? Because else, it seems impossible.

you are allowed to mix

 

[Junkfood00]

you are allowed to mix

Alright. Mixed. Now what? :biggrin1:

 

[neutralhatter]

 

[hameem]

Alright. Mixed. Now what? :biggrin1:

Now eat your junkfood or take the pills by random for dying slowly or fast, respectively.

 

[StrixSeo]

lol this is hard and I can't find the answer on google

 

[Gogol]

 

[SkyrocketSEO]

the poisened pills are an exception. 1 pot has poisened pills. they weigh 9 grams each

regular pills weigh 10 grams

poisened pills and regular pills look exactly the same.

Is one pot filled just with poisoned pills or there is a random number of pills?

 

[hameem]

Is one pot filled just with poisoned pills or there is a random number of pills?

One pot filled with just poisoned pills.

 

[SkyrocketSEO]

One pot filled with just poisoned pills.

So, where is the riddle? This is so easy that I won't even bother giving the answer....I thought there are just a couple of bad pills

Edit: Just saw a guy gave the answer already, what a stupid "riddle". So, that's what you gotta answer to enter Microsoft...good Lord, Bill Gates went crazy

 

[Gogol]

Edit: Just saw a guy gave the answer already, what a stupid "riddle".

That's actually a very good & common riddle SRS.. :/

 

[procam]

All of the pills would be poisoned due to cross contamination

 

[neutralhatter]

They make you jump through hoops everywhere, one way or the other...

So, where is the riddle? This is so easy that I won't even bother giving the answer....I thought there are just a couple of bad pills

Edit: Just saw a guy gave the answer already, what a stupid "riddle". So, that's what you gotta answer to enter Microsoft...good Lord, Bill Gates went crazy

 

[chapter2]

My solution:

Weigh 2 pills from the first pot with 1 from the second pot. If:
a) sum = 30 => poisoned pills are in the pot 3
b) sum = 29 => poisoned pills are in the pot 2
c) sum = 28 => poisoned pills are in the pot 1