Poison - Revision history

Oscarlevin: Reverted edits by Ocafaromy (talk) to last revision by Zerrakhi

2010-11-24T12:51:21Z

Reverted edits by Ocafaromy (talk) to last revision by Zerrakhi

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	~~=[http://efowozodije.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=~~
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	A nice number theory puzzle based on one I heard on Car Talk.		A nice number theory puzzle based on one I heard on Car Talk.

Ocafaromy at 23:55, 23 November 2010

2010-11-23T23:55:02Z

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			=[http://efowozodije.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=
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	A nice number theory puzzle based on one I heard on Car Talk.		A nice number theory puzzle based on one I heard on Car Talk.

Zerrakhi at 14:35, 22 October 2010

2010-10-22T14:35:05Z

← Older revision		Revision as of 08:35, 22 October 2010
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	{{Hint\| You could actually find the poisoned vial even if you have up to sixteen vials total. For seventeen vials, you would need an extra petri dish.}}		{{Hint\| You could actually find the poisoned vial even if you have up to sixteen vials total. For seventeen vials, you would need an extra petri dish.}}

			{{Solution \| Allocate a number to each liquid (zero, one, two, three, etc).

			Now let each dish represent a particular position in a four-digit binary number (so one dish represents the "eights" position, one dish represents the "fours" position, etc).

			Place a particular liquid in a particular dish only if the number of that liquid, written in binary, has a "1" in the position represented by that dish.

			Then read the results from the four dishes as a binary number, which will be the number of the liquid that is the poison.}}

	==References==		==References==

Zerrakhi: Got rid of word 'administered'. I don't think you can administer to an object (such as a petri dish) can you? Only to a person, I'd have thought.

2010-10-18T00:35:26Z

Got rid of word 'administered'. I don't think you can administer to an object (such as a petri dish) can you? Only to a person, I'd have thought.

← Older revision		Revision as of 18:35, 17 October 2010
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	==Puzzle==		==Puzzle==

	In the secret lab of a mad scientist, you find thirteen vials of liquid. One of the vials contains a deadly poison that will kill you instantly. If you drink all of the other twelve vials, you will gain a pleasant variety of super-powers. Luckily, there are some petri dishes which will, in one hour, determine if any poison has been ~~administered~~. Unluckily, there are only four to use, and you only have one hour before the mad scientist returns. How can you determine which of the thirteen vials you should definitely not drink?		In the secret lab of a mad scientist, you find thirteen vials of liquid. One of the vials contains a deadly poison that will kill you instantly. If you drink all of the other twelve vials, you will gain a pleasant variety of super-powers. Luckily, there are some petri dishes which will, in one hour, determine if any poison has been placed in them. Unluckily, there are only four to use, and you only have one hour before the mad scientist returns. How can you determine which of the thirteen vials you should definitely not drink?

	==Help==		==Help==

Oscarlevin: Created page with 'A nice number theory puzzle based on one I heard on Car Talk. ==Puzzle== In the secret lab of a mad scientist, you find thirteen vials of liquid. One of the vials contains a d…'

2010-05-25T15:10:30Z

Created page with 'A nice number theory puzzle based on one I heard on Car Talk. ==Puzzle== In the secret lab of a mad scientist, you find thirteen vials of liquid. One of the vials contains a d…'

New page

A nice number theory puzzle based on one I heard on Car Talk.

==Puzzle==

In the secret lab of a mad scientist, you find thirteen vials of liquid. One of the vials contains a deadly poison that will kill you instantly. If you drink all of the other twelve vials, you will gain a pleasant variety of super-powers. Luckily, there are some petri dishes which will, in one hour, determine if any poison has been administered. Unluckily, there are only four to use, and you only have one hour before the mad scientist returns. How can you determine which of the thirteen vials you should definitely not drink?

==Help==

{{Hint| You could actually find the poisoned vial even if you have up to sixteen vials total. For seventeen vials, you would need an extra petri dish.}}

==References==

{{Car Talk}}

[[Category:Number theory]]