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3 Policemen and 3 thieves had to cross a river using a small boat.
3 policemen and 3 thieves had to cross a river using a small boat. Only two can use the boat for a trip. All the 3 policemen and only 1 thief knew to ride the boat. If 2 thiefs and 1 policeman were left behind they would kill him. But none of them escaped from the policemen. How would they be able to cross the river?


  
Total Answers and Comments: 2 Last Update: May 21, 2009     Asked by: srividhya athreya 
  
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May 19, 2009 08:25:32   #1  
syed mohammad ali Member Since: May 2009   Contribution: 2    

RE: 3 Policemen and 3 thieves had to cross a river using a small boat.

Let a b c are 3 policeman and 1 2 3 are 3 thieves (1 knows to sail the boat)

First of all a & 3 will go to other end then b c & 1 2 a 3

a returns back and 1 2 will go to other end then a b c 1 2 3

1 return back and b c will go to other end then a 1 b c 2 3

b 2 will return back and 1 a will go to other end then b 2 a c 1 3

c 3 will return back and b c will go to the other end then 2 3 a b c 1

1 will return back and takes 2 with him to other end then 3 a b c 1 2

1 will again return back and takes 3 with him and its over every body crossed
the river


 
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May 21, 2009 01:32:05   #2  
hydsarema Member Since: August 2008   Contribution: 11    

RE: 3 Policemen and 3 thieves had to cross a river using a small boat.
Let p1 p2 p3 be three policemen.
Let t1 t2 t3 be three thieves.t1 knows how to ride the boat.

p1 and t1 go at first. p1 is left at the other edge.
t1 rows back(does not escape as mentioned in the question)
t1 and t2 go second .t2 is left at the other edge.(if at all a policeman was taken 2 theives would be left with one policeman)
t1 rows back.
t1 and p2 go third and p2 is left at the other edge.(if at all a thief was taken 2 theives would be left with one policeman)
t1 and t3 go fourth and leave t3 at the other edge
t1 rows back
t1 and p3 go last

 
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3 policemen and 3 thieves had to cross a river using a small boat. Only two can use the boat for a trip. All the 3 policemen and only 1 thief knew to ride the boat. If 2 thiefs and 1 policeman were left 
Latest Answer : Let p1,p2,p3 be  three policemen.Let t1,t2,t3 be three thieves.t1 knows how to ride the boat.p1 and t1 go at first. p1 is left at the other edge.t1 rows back(does not escape as mentioned in the question)t1 and t2 go second .t2 is left at the other ...


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