If U can.....answer this

[vssoma]

ufff .. tough one but broken this one ....

PM you so that others can try ....

it can be done with two fuses . Lit first fuse at both ends. you know it will take 30 mins . at same lit second fuse at one end. Now when first fuse is completely burn lit 2nd from other end . It will take another 15 mins.

This was a Q to me in an interview, in 2000, of a software company

:clap: :clap:

 

[vssoma]

Question: How to cross the desert

An explorer wishes to cross a barren desert that requires 6 days to cross, but one man can only carry enough food for 4 days. What is the fewest number of other men required to help carry enough food for him to cross?

 

[rajeabc]

Question: How to cross the desert

An explorer wishes to cross a barren desert that requires 6 days to cross, but one man can only carry enough food for 4 days. What is the fewest number of other men required to help carry enough food for him to cross?

2+traveller (who has to cross )

 

[kinathi]

since one person can carry only food enough for four days it is impossible for anybody to cross the desert with only four days food.

 

[vssoma]

2+traveller (who has to cross )

:clap: :clap: :clap:

 

[vssoma]

Originally Posted by vssoma View Post
Question: How to cross the desert

An explorer wishes to cross a barren desert that requires 6 days to cross, but one man can only carry enough food for 4 days. What is the fewest number of other men required to help carry enough food for him to cross?

Solution:

The answer is clearly that only two other men are required. The first helper only goes one day into the desert. He feeds the other two men during the first day, so that at the beginning of the second day, he only has one day rations left. So he goes back to camp. On the second day, the second helper feeds himself and the explorer. On the beginning of the third day the helper now has two days rations left so he heads back. The explorer is two days into the journey and still has all four days of his food left, so he continues on alone.

 

[vssoma]

Question: How many people

At a family get-together function, the following people are present: one grandfather, one grandmother, four sons, three daughters, three fathers, three mothers, seven children, five grandchildren, five brothers, four sisters, one son-in-law and one daughter-in-law. But not these many people has attended as it sounds.

Find how many people has attended the function.

 

[PGDIMES]

question: How many people

at a family get-together function, the following people are present: One grandfather, one grandmother, four sons, three daughters, three fathers, three mothers, seven children, five grandchildren, five brothers, four sisters, one son-in-law and one daughter-in-law. But not these many people has attended as it sounds.

find how many people has attended the function.

11 people

 

[MurAtt]

Question: How many people

At a family get-together function, the following people are present: one grandfather, one grandmother, four sons, three daughters, three fathers, three mothers, seven children, five grandchildren, five brothers, four sisters, one son-in-law and one daughter-in-law. But not these many people has attended as it sounds.

Find how many people has attended the function.

he he ....

Time consuming ....

Hint:
The Grandfather is a father himself ...
His son is a son as well as a father of his son (i.e. Granfather to this grandson)
Now this grandson is a son

So 3 people make 4 relations (i.e. 2 fathers and 2 sons)

In the same way for the ladies.

Again, two sons to the same grandfather add some confusion to the grandfathres, fathers and sons ratio ..

etc etc

:thumb:

 

[vssoma]

Question: How many people

At a family get-together function, the following people are present: one grandfather, one grandmother, four sons, three daughters, three fathers, three mothers, seven children, five grandchildren, five brothers, four sisters, one son-in-law and one daughter-in-law. But not these many people has attended as it sounds.

Find how many people has attended the function.

Solution:

Eleven family members attended the function. We have a grandfather, grandmother, their two children who were brother and sister and they got married to another sister and brother and three sons and two daughters to them. Thus totaling of eleven family members.

(Let A, B be grandfather and grandmother. They have two children C and D, C is son and D is daughter. C is married to E and D is married to F and E, F are sister and brother. C and E have three sons and D and F have two daughters)