Latest TCS Aptitude Question SOLUTION: In the reading room of a library,there are 10 tables,4 chairs per table.In each table there are different numbers of people seated.How many ways they will sit in the library so tha

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In the reading room of a library,there are 10 tables,4 chairs per table.In each table there are different numbers of people seated.How many ways they will sit in the library so that no chair will be blank?

Asked In TCS Srinivasa Rao (13 years ago)

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Pargat Pal Singh  (13 years ago)

Can some one explain please...
If there are 4 chairs per table and in each table there are different numbers of people seated. Then only 4 tables can be occupied with 4,3,2,1 persons and rest of 6 tables will be blank and rest of chairs will also be blank.
Pls excuse me if there is some mistake in my interpretation.

Is this solution Helpfull? Yes (8) | No (1)  

Raushan Kumar  (13 years ago)

not possible.....

Is this solution Helpfull? Yes (3) | No (2)  

Asheesh Jain  (13 years ago)

there are 40 chairs so that only 40 people sit on them.
the no of ways so that 40 people sit on 40 chairs so that no chair will be blank=40p40=!40

Is this solution Helpfull? Yes (2) | No (10)  

lingasunil  (13 years ago)

1st table 1person +2nd 2+ 3rd 3+4th 4(oly possible ways to sit diff no of ppl)
so remaining 6 tables are empty

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Abhishek nkumar  (8 years ago)

answer is 6 tables remaining

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Anmol  (10 years ago)

I think it should be 240 ways.
let us not consider the chairs for a while.
talking of one table, 4 people can be arranged in 4! ways (since there are 4 chairs per table).
hence 24 ways of arranging 4 people on one table.
Now, there are 10 such tables and no seat must be empty means 10*4! = 240 ways

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vivek kumar  (8 years ago)

on every tabel 4person can sit in 4! way if there are 10tabel so no is 4!*10

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