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Brain teaser # 31

Prateek Agarwal (Sr. Executive - Finance & Accounts) (1732 Points)

17 July 2012

Georges, Patrick, Charlis, Samuel and Bruno are five Frenchmen. Georges knows English and Chinese. Patrick knows Chinese and Japanese. Charlis knows Japanese and German. Samuel knows German and English. Bruno knows them all: English, Chinese, Japanese and German.

In how many ways can they sit in a row, such that any two neighboring persons have no problems in communication?

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14 Replies

Rashid Imam (Officer (Indirect taxation)) (296 Points)
Replied 17 July 2012

Georges, Patrick, Bruno, Charlis, Samuel

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CA.Ganesh (Practicing Chartered Accountant) (308 Points)
Replied 17 July 2012

Any ways can sit since all know french, there will not be any communication problem

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Rashid Imam (Officer (Indirect taxation)) (296 Points)
Replied 17 July 2012

Originally posted by : ganesh
	Any ways can sit since all know french, there will not be any communication problem

Now i understand your question Pratik, as per Ganesh they all can talk in French.. SO there are 120 ways they can sit in a row...

Rashid Imam (Officer (Indirect taxation)) (296 Points)
Replied 17 July 2012

Anser This Question :)

/forum/brain-teaser-210498.asp#.UAT6e5GmGKE

Pacer (C) (86 Points)
Replied 17 July 2012

Nice questions Prateek.

They can sit in 48 ways so that any two neighbors can communicate with each other.

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Pacer (C) (86 Points)
Replied 17 July 2012

Originally posted by : ganesh
	Any ways can sit since all know french, there will not be any communication problem

It is not mentioned that they all know french. Even if they are frenchmen, they may be staying in different countries and not know french at all :)

Rashid Imam (Officer (Indirect taxation)) (296 Points)
Replied 17 July 2012

This is a logic question, you cant suppose :)

Pacer (C) (86 Points)
Replied 17 July 2012

Rashid bhai...

"they all know french" is also an assumption :) isn't it?

Rashid Imam (Officer (Indirect taxation)) (296 Points)
Replied 17 July 2012

Now Prateek Bhai will clarify

Goal CA (Student) (141 Points)
Replied 17 July 2012

They can sit in 5! ways.......

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CA Priya (CA ) (59 Points)
Replied 17 July 2012

Answer Plzz.....i guess it shud b 120

Aseem Watts (CA Final) (289 Points)
Replied 18 July 2012

5*4*3*2*1 ways

Prateek Agarwal (Sr. Executive - Finance & Accounts) (1732 Points)
Replied 18 July 2012

The correct answer is actually 120 ways...

Since they are all Frenchmen, hence any way they sit...they would not be facing any communication problems.

Pacer (C) (86 Points)
Replied 18 July 2012

Originally posted by : Prateek Agarwal
	The correct answer is actually 120 ways... Since they are all Frenchmen, hence any way they sit...they would not be facing any communication problems.

Hi Prateek,

I have a different opinion here.

Even if they are frenchmen, it is not necessary that they all know French.

I agree that unlike India, they would have multiple languages but still with the given information, I think it is inappropriate to assume that they all know French.

Aseem, Priya, Sushil - what do you think?