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Making Ice


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13 replies to this topic

#1 BMAD

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Posted 14 May 2013 - 04:58 PM

 
You have an old-fashioned refrigerator with a small freezer compartment capable of holding seven ice cube trays stacked vertically. But there are no shelves to separate the trays, and if you stack one tray on top of another before the ice cubes in the bottom tray are fully frozen, the top tray will nestle into it, and you won't get full cubes in the bottom tray. You have an unlimited supply of trays, each of which can make a dozen cubes. What's the fastest way to make full-sized ice cubes?

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#2 vigmeister

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Posted 14 May 2013 - 06:05 PM

Spoiler for How many cubes...


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#3 bgm1961

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Posted 14 May 2013 - 07:47 PM

vigmeister's solutions is probably the one you're looking for. But alternatively you could get right down to business by:

 

Spoiler for


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#4 BMAD

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Posted 14 May 2013 - 08:39 PM

vigmeister's solutions is probably the one you're looking for. But alternatively you could get right down to business by:

 

Spoiler for

you are on the right track but i am looking for a bigger answer (and assume you have nothing more than trays (no bamboo :) )


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#5 maheshrvyas

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Posted 15 May 2013 - 10:32 AM

I can think of a way of making full sized cubes but this may not be the fastest one.

 

Put 1 in freezer, once it freezes, take out that one, put another one, invert the 1 which is already freezed and put 1 more over it, .... and so on.


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#6 BMAD

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Posted 15 May 2013 - 02:05 PM

I can think of a way of making full sized cubes but this may not be the fastest one.

 

Put 1 in freezer, once it freezes, take out that one, put another one, invert the 1 which is already freezed and put 1 more over it, .... and so on.

We are looking for the most ice cubes frozen on a single freezing try


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#7 kingofpain

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Posted 15 May 2013 - 03:35 PM

Spoiler for I assume


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#8 bgm1961

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Posted 16 May 2013 - 01:17 AM

Hmmm... you made it clear that we're working with a small freezer capable of holding only seven trays, but...

 

Spoiler for


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#9 BobbyGo

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Posted 17 May 2013 - 08:44 PM

Since you have an unlimited supply of trays...

 

Spoiler for

 


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#10 Morningstar

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Posted 20 May 2013 - 02:19 PM

Spoiler for Assuming the trays are rigid


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The cake is a lie.




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