White / photography.

w h i t e

A story of black & white
but i'll prefer white

8/June/09

Monday, June 8, 2009 { 7:54 PM }

Hehe..

I was late for 40 mins today for the first lesson.

I was unable to wake up.. lols

Anw.. Few hours of maths and 2 hours of geog today..

Boring leh.. =.=

Reached home at 4pm today.(We were released at 3.40pm, LOL!)

And began watching anime.

Anw I hope the conflict between someone and mi is over..

无缘无故跑出来个敌人也太莫名其妙了吧... >.>

Back to the question that I posted few days ago..

Seems that nobody is really interested in the question except darryl.. lol

Never mind, darrl. Even though you tried quite hard but ur answer is far far away from the correct one... lols~~~

If im not the wrong..

To solve this question, we need to use Proof by contradiction.(To the extent of my understanding, I guess this is what it is called.. hehe)

8 lions and 1 sheep.

No lions will eat the sheep unless one can ensure his safety.

In other words, when they can ensure their safety , they will eat the sheep.

But how to ensure that the lion is safe or not??

We have to begin with 1 lion on the grass field.

1 lion and 1 sheep.

Of couse, the lion will eat the sheep as there are no other lions.

2 lions on the field.

Nobody will dare to eat the sheep. Because if either one eats it, then the other one will eat it.

Therefore, the sheep will be safe when there are 2 lions.

3 lions on the field.

The 3rd lion know that the previous 2 lions dare not to eat the sheep. (This is why I said the statement of lions are clever, smart is very important)

Thus, the 3rd lion can eat the sheep with no worries. Because as the 3rd lion eat the sheep, there are 2 lions and 1 sheep left. The remaining 2 lions will not eat the sheep, as stated above.

4 lions on the field.

The 4th lion know if it eats the sheep. Then, the 3rd lion will eat the 4th lion. Safety comes first, therefore the sheep will not be eaten when there are 4 lions.

5 lions on the field.

The 5th lion knew that the 4th lion will not eat the sheep. Therefore, the 5th lion may eat the sheep as it can ensure its safety.

So you guys can see the trend now??

Odd number of lions, the sheep dies... (悲剧，lol!!!)

Even number of lions, the sheep is safe. =X

Yeah.. so the final answer is that the 8th lion will not eat the sheep.

I catch no balls when I first saw this question too. Until I saw the anser then I found out how interesting this question is.. =D

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Since 28th/Nov/2008