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46 replies to this topic

#11 quiet.one.sam

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Posted 27 July 2007 - 08:01 AM

i think that... since 1 brick=1kg... and half a brick is heavy (that's how i read it), that 1 brick would be too(2) heavy.


...but obviously that's wrong... ah well, was worth a try, hehe
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#12 Rahul8204

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Posted 10 August 2007 - 08:40 PM

Each brick weighs 1 Kg and half a brick.....now break this brick.....u will get 2 half bricks weighing 1 kg each....so each brick weighs 2 Kg's
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#13 pocho

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Posted 18 August 2007 - 02:43 AM

Well, if one brick is 1 kilogram and half a brick heavy, how heavy is half brick?

X= weight of the brick.

X= 1 Kg + 1/2X

X-1/2X= 1 Kg

1/2X= 1 Kg

X= 2 Kg.

Prove:

2Kg= 1 Kg + 1/2(2 Kg)

Isn't it clear?
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#14 Drachma

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Posted 22 August 2007 - 04:30 AM

You cant take the 'and' as a logical operator without rearranging the question

lol
applying boolean logic here


One brick is one kilogram "AND" half a brick heavy

1brick = (1kilo) X (1/2 brick) [ 'X' for the boolean operator AND ]



because, "One brick is one kilogram "AND" half a brick heavy"
is NOT "1 brick = (1kilo) X (1/2 brick)"
and its NOT "1 brick = (1kilo) X 1 brick = (1/2 a brick)

it is actually (1 brick = 1 kg) X (1/2 brick) if you take 'and' as logical rather than arithmetic.

because '1/2 brick' is not a proposition, an attempt to take 'and' as a logical (rather than arithmetic) operator falls apart.
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#15 SeRiOuS

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Posted 27 September 2007 - 04:36 PM

Very Heavy.

Says, 1 Brick Is 1 KiloG
Looks like if the cat thinks 1/2 a brick is heavy
Then a WHOLE BRICK MUST BE CRIPPLING.

[Go Ahead-RAIL 'reallittleman'!]
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#16 SeRiOuS

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Posted 27 September 2007 - 04:38 PM

that's a good one. i approve.

i think that... since 1 brick=1kg... and half a brick is heavy (that's how i read it), that 1 brick would be too(2) heavy.


...but obviously that's wrong... ah well, was worth a try, hehe


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#17 BoilingOil

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Posted 27 September 2007 - 04:58 PM

Brick - Back to the Logic Puzzles
An old riddle is as follows: One brick is one kilogram and half a brick heavy. What is the weight of one brick (previously: How heavy is one brick)?
(This is a typical elementary math brain teaser.)



If the above contains two statements, then it says that 1 brick is 1 kilogram, and that 1/2 brick is heavy.

If half a brick is heavy, a whole brick must be 2x heavy (regardless of it's actual weight).
2x Heavy could mathematically be written as 2heavy (pronounced TOO HEAVY)


On the other hand, if it is ONE statement, then it says that 1 brick equals 1kg + 1/2 a brick
That means, that 1 brick - 1/2 brick equals 1 kg, and therefor 1 brick must weigh twice 1 kg or a total of 2 kg.

Nive trick question

BoilingOil
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#18 Musikid83

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Posted 29 September 2007 - 10:56 AM

You have all brought up valid arguments about how the question should be interpreted, and valid answers dependent on the interpretation, but I just want to bring up the point that this (and the other daily brain teasers) should (more than likely) be analyzed using the most basic logic possible... again, all of your answers (based on your interpretation of the question) are or could be accurate, but it occurs to me that these "brain teasers" are not meant to cause philosophical debates... so (as I do), these riddles should be examined using the most basic terms possible... right?
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#19 tomb228

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Posted 05 October 2007 - 08:06 PM

[quote="rookie1ja"]Brick - Back to the Logic Puzzles
An old riddle is as follows: One brick is one kilogram and half a brick heavy. What is the weight of one brick (previously: How heavy is one brick)?
(This is a typical elementary math brain teaser.)

Remember this is a riddle not an algebra problem so you need to interpret it as such. To clarify, exchange "one brick" for "a brick" then a normal brick would weigh 2/3 kg.

This brick weighs 1 kg but it's 1.5x the normal brick weight. 1 kg = 1.5*Normal_Brick
Normal_Brick = 2/3 kg

On the plus side, since a kilogram is a unit of mass not weight the answer is the same on the moon.
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#20 petersara

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Posted 10 October 2007 - 12:25 AM

but if its one kilo and half of itself then it is 1kg coz if its halfing itself it would be halfing its original weight which is 1kg. right? im starting to confuse myself is anyone even adding anything to htese forums?
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