Latest TCS Aptitude Question SOLUTION: You are locked inside a room with 6 doors - A, B, C, D, E, F. Out of which 3 are Entrances only and 3 are Exits only. One person came in through door F and two minutes later secon

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(#M40011428) TCS Logical Reasoning question TCS PUZZLE Keep an EYE

You are locked inside a room with 6 doors - A, B, C, D, E, F. Out of which 3 are Entrances only and 3 are Exits only. One person came in through door F and two minutes later second person came in through door A. He said, "You will be set free, if you pass through all 6 doors, each door once only and in correct order. Also, door A must be followed by door B or E, door B by C or E, door C by D or F, door D by A or F, door E by B or D and door F by C or D." After saying that they both left through door B and unlocked all doors. In which order must you pass through the doors?
(A) CFDAEB (B) EFDABC (C) BFDACE (D) CFDABE

Asked In TCS Priya (11 years ago)

Unsolved Read Solution (11)

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Read Solution (11) :

Anubhav Kumar  (11 years ago)

Find the doors as entry or exits..
Entry doors-- A, E, F ; rest exit doors.
The answer will be D Check the constraints that are on the following doors.

Is this solution Helpfull? Yes (23) | No (3)  

mayank pandey  (11 years ago)

It is given that one person came in through door F and second person came in through door A. It means that door A and door F are Entrances. Also, they both left through door B. Hence, door B is Exit.

As Exit and Entrance should alter each other and we know two Entrances, let's assume that the third Entrance is W. Thus, there are 6 possibilities with "_" indicating Exit.



1) _W_A_F (2) _W_F_A (3) _F_W_A (4) _F_A_W (5) _A_W_F (6) _A_F_W

As door A must be followed by door B or E and none of them lead to the door F, (1) and (6) are not possible.

Also, door D must be the Exit as only door D leads to the door A and door A is the Entrance.

(2) _W_FDA (3) _F_WDA (4) _FDA_W (5) DA_W_F

Only door D and door C lead to the door F. But door D is used. Hence, door C must be the Exit and precede door F. Also, the third Exit is B and the W must be door E.

(2) BECFDA (3) CFBEDA (4) CFDABE (5) DACEBF

But only door B leads to the door C and both are Exits. Hence, (2) and (5) are not possible. Also, door F does not lead to door B - discard (3). Hence, the possible order is (4) i.e. CFDABE.

Is this solution Helpfull? Yes (10) | No (1)  

dhirendra sisodiya  (11 years ago)

ans. is A. CFDAEB going through the option

Is this solution Helpfull? Yes (9) | No (6)  

Sumit Gupta  (11 years ago)

ans seems to be A & D both

Is this solution Helpfull? Yes (3) | No (5)  

niki  (11 years ago)

@anubhav : how can u say that e is an exit door?it is not given in the question.

Is this solution Helpfull? Yes (2) | No   

nishant pandey  (11 years ago)

between a and d,the correct answer is "a" because we do not know whether e is a exit door or entry door in option d

Is this solution Helpfull? Yes (2) | No   

s pal  (11 years ago)

a&d both is the ans

Is this solution Helpfull? Yes (1) | No (3)  

srujana ponna  (11 years ago)

Ans:B;
E,D,B are exit doors F,A,C are entrances

Is this solution Helpfull? Yes (1) | No (6)  

shivesh  (11 years ago)

a is the answer

Is this solution Helpfull? Yes (1) | No   

Jamal h mallik  (11 years ago)

by option study two options are favorable A and D which are following the sequence
but A wrong coz according 2 Question b is exit door but in A b is an entrance door ( consider that currently m inside the room so the sequence will start with exit door)
D is correct ans

Is this solution Helpfull? Yes (1) | No   

shyamlesh dash  (11 years ago)

pls give the answer mail is shyamleshd@gmail.com

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