Latest TCS Aptitude Question SOLUTION: A lies on mon, tues, wed and speak truths on other days, B lies on Thurs, Fri, Sat and speaks truths on other days. One day a said I lied today and B said I too lied today. What is

• Placement Papers
• /
• TCS

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40002221) TCS question Keep an EYE

A lies on mon, tues, wed and speak truths on other days, B lies on Thurs, Fri, Sat and speaks truths on other days. One day a said I lied today and B said I too lied today. What is the day?

Asked In TCS Subhankar Mondal (12 years ago)

Unsolved Read Solution (6)

Is this Puzzle helpful?   (17)   (8) Submit Your Solution

Read Solution (6) :

suchandra raavi  (12 years ago)

Please check the question because it leads to a paradox. The question should be "Man A lies on monday,tuesday and wednesday.Man B lies on thursday,friday
and saturday.On one particular day A said "Yesterday i lied".then B said
"Yesterday i lied too".On which day were these statements made?"
Now the ans is Thursday.

Is this solution Helpfull? Yes (35) | No (5)  

Amandeep  (12 years ago)

This question is either not correct or the answer will be "It can't be possible"

This is because::::day can't be Sun,Mon,tue and wed acc. to B as he on this days he only speaks truth so he can't say that today i lied.
Similary A can't say on Sun,Thrusday,fri,sat that i lied today because these day he can't lie and so he can't speak that today i lied amoung these days.

So acc. to A, today can only be mon,tue and wed but acc. to b today can only be thr, fri, sat.

Since there today set has null intersection (nothing common), so there can't be a any day when this situation holds true.

Thanks,

Is this solution Helpfull? Yes (14) | No (1)  

Utsav Mukherjee  (12 years ago)

thursday.

Is this solution Helpfull? Yes (6) | No (8)  

pratik dasa  (12 years ago)

sunday is the answer...because one day is common between their two's schedule to speak lies and truth and its sunday.

Is this solution Helpfull? Yes (6) | No (19)  

sirisha  (11 years ago)

both tell truth on sunday..
here both confessed the truth that they lied on that day..
so,it is nothing but "sunday"..

Is this solution Helpfull? Yes (3) | No (6)  

PRAKHAR SAXENA  (8 years ago)

A and B both agree
If I was telling the truth, then both
A and B were lying.
---------------
But there is no day that both
A and B are lying, since:
A is lying on
Mon, Tues, Wed

B is lying on
Thurs, Fri, Sat
-------------
Therefore, I must have been lying
and both A and B were telling the truth
-------------
There is only 1 day when both A and B
are telling the truth, so today
must be Sunday

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.