Latest TCS Aptitude Question SOLUTION: Five college students met at a party and exchanged gossips. Uma said, Only one of us is lying. David said, Exactly two of us are lying. Thara said, Exactly 3 of us are lying.

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(#M40024323) TCS question Truth and Lie Keep an EYE

Five college students met at a party and exchanged gossips. Uma said, Only one of us is lying. David said, Exactly two of us are lying. Thara said, Exactly 3 of us are lying. Querishi said, Exactly 4 of us are lying. Chitra said All of us are lying. Which one was telling the truth ?
option
a) David
b) Querishi
c) Chitra
d) Thara

Asked In TCS Raj Kumar Ray (10 years ago)

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Amsaveni Natarajan  (10 years ago)

From the question, it is clear that one of them is telling the truth.. So remaining 4 of them is lying.. Therefore, Querishi is telling the truth

Is this solution Helpfull? Yes (31) | No (2)  

Sattam  (10 years ago)

b)Querishi tells the truth.

Is this solution Helpfull? Yes (10) | No (4)  

Geetha Chilamakurthi  (10 years ago)

As all are contradictory statements, it is clear that ONLY one of them is telling the truth. So remaining 4 of them are lying. Querishi mentioned that exactly 4 are lying. So, he is telling the truth.
Explanation: Let us 1st assume that Uma is telling the truth. Then according to her only one is lying. But if only one is lying then all the others’ statements are contradicting the possibility. In the same way all the other statements should be checked. If we assume the Querishi is telling the truth, according to him exactly 4 members are lying. So all the others are telling lies and he is the one who is telling the truth. This case fits perfectly.

Is this solution Helpfull? Yes (8) | No   

Devika.R  (10 years ago)

HI sattam, can u explain ths

Is this solution Helpfull? Yes (3) | No   

harsha   (10 years ago)

b) qureshi

Is this solution Helpfull? Yes (2) | No (1)  

Shreyansh Jain  (10 years ago)

please explain?

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Divya Ramesh  (9 years ago)

Exactly it is clear that Querishi tells the truth from the question because one of them is telling truth

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