IQ test

Yo Yo

JF-Expert Member
May 31, 2008
11,217
1,702
The rules are fairly easy. A mother, a father, two girls, two boys, a policeman and a convict are to cross the river with a boat. The conditions are:

  • The convict cannot be alone with any member of the family without the policeman.
  • The father cannot be with the daugther(s) if the mother is not there.
  • The mother cannot be with the boy(s) if the father is not there.
  • Only the father, the mother and the policeman know how to sail the boat (so one of them should be on the boat on each crossing)
  • The boat holds at most 2 people
 
Coding of Objects

Mom = M
Dad = D
1st Son = Sn 1
2nd Son = Sn 2
1st Daughter = Dtr 1
2nd Daughter = Dtr 2
Police Officer = P/O
Convict = Cvt

Meaning of Signs

A = Point of Origin of which the subjects are stranded.
B = Point of Destination of which the subjects intend to reach safely

Meaning of signals

-----------------------------> To point B from A

<----------------------------- From point B to A


Soln:-
Point A Point B

1[SUP]st[/SUP] Trip
P/O + Cvt --------------------------------------------> C
P/O <-------------------------------------------

2[SUP]nd[/SUP] Trip
P/O + Dtr 1 --------------------------------------------> Dtr 1
P/O + C<-------------------------------------------


3rd Trip

Sn 1 + Dtr 2 --------------------------------------------> Dtr 2, Dtr 1
Sn 1 <-------------------------------------------


4th Trip

Sn 1 + Sn 2 --------------------------------------------> Sn 1, Dtr 2, Dtr 1
Sn 2 <-------------------------------------------


5th Trip

Sn 2 + F --------------------------------------------> Sn 2, Sn 1, Dtr 1 & Dtr 2
F <-------------------------------------------


6th Trip

P/O + Cvt --------------------------------------------> P/O, Cvt, Sn 2, Dtr 1 & Dtr 2
Sn 1 <-------------------------------------------


7th Trip

Sn 1 + F --------------------------------------------> F,P/O, Cvt, Sn 2, Dtr 1 & Dtr 2
Sn 1 <-------------------------------------------


8th Trip

Sn 1 + M --------------------------------------------> P/O, Cvt, M, F, Sn 1, Sn 2, Dtr 1 & Dtr 2.


Unfortunately understanding the answer too needs an easy understanding mind lolz, Yo Yo could you please provide the results?
 
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