Latest TCS Aptitude Question SOLUTION: A mother has 3 babies Usha, Nisha and Eesha. If Usha is sleeping, Eesha is drinking milk. If Nisha is not sleeping, Eesha is not drinking. It never happens that both Usha and Ni

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(#M40023746) TCS question Keep an EYE

A mother has 3 babies Usha, Nisha and Eesha.
If Usha is sleeping, Eesha is drinking milk.
If Nisha is not sleeping, Eesha is not drinking.
It never happens that both Usha and Nisha are sleeping.
Father concludes that Usha never sleeps.
Mother concludes that Nisha never sleeps.
Nurse concludes that Eesha always drinks.
Who has made a correct deduction?

Asked In TCS aamir alam (11 years ago)

Unsolved Read Solution (21)

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Read Solution (21) :

deepikamutnuru  (11 years ago)

answer: Father and mother
father concludes that "usha never sleeps" then eesha never drinks milk .hence nurse conclusion is wrong.
mothers concludes that "nisha never sleeps" then eesha never drinks milk.hence nurse conclusion is wrong because nurse concluded that 'eesha always drinks milk' which means nisha and usha are always sleeping but it neve happens both are sleeping.so nurse is wrong
in the above the father and mother statements doen't contradict with each other so both father and mother can conclude correctly.

Is this solution Helpfull? Yes (25) | No (4)  

ipsita midya  (11 years ago)

i think mother has a correct deduction

Is this solution Helpfull? Yes (13) | No (5)  

gaurav kumar  (11 years ago)

nurse conclude that eesha always drink

Is this solution Helpfull? Yes (3) | No (7)  

Pooja Udayan  (11 years ago)

i think nurse as when either usha or nisha sleeps then eesha drinks milk. so nurse made the correct deduction that eesha always drinks.

Is this solution Helpfull? Yes (3) | No (4)  

Medha Mitra  (11 years ago)

As per what I have understood from the question is that:
1. Father concludes that Usha never sleeps: This is not a correct conclusion, because Usha does sleep when Eesha is drinking.
2. Mother concludes that Nisha never sleeps: This is again wrong because, Nisha does sleep when Easha is NOT drinking.
3. Nurse concludes that Eesha always drinks: This is right, because with this both Usha and Nisha sleeps which was initially the problem stated in the 4th sentence, "It never happens that both Usha and Nisha are sleeping."
So, the nurse has made the right conclusion.

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

Shivangi Shukla  (11 years ago)

mother has made a correct deduction

Is this solution Helpfull? Yes (2) | No (3)  

lucky  (11 years ago)

Both father and mother i think ,bcos if nurse was right then esha always drinks then usha and nisha both sleeps which is voilating the condition that usha and nisha never sleeps together,and if we assume any of the conclusion made by father and mother that doesn't violate any condition

Is this solution Helpfull? Yes (2) | No   

visali  (11 years ago)

nurse as both nisha and usha never sleep at a time.

Is this solution Helpfull? Yes (2) | No   

nikhil pande  (11 years ago)

father made correct decision

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

ipsita midya  (11 years ago)

it will be has made*

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

aamir alam  (11 years ago)

I don't know the correct answer...Plz explene it properly...

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

ankush kumar agarwal  (11 years ago)

according to the question when usha sleeeps than eesha drinks.so we dont know whether nisha is sleeping or not.now according to second condition when nisha is awake Eesha never drinks milk and from third condition if usha is sleeping than nisha has to be awake.So comparing the 3 conditions we can conclude that mother is right and her conclusion that nisha never sleeps is correct.so mothers conclusion is correct.

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

anjana sethi  (11 years ago)

Nurse conclusion is correct

Is this solution Helpfull? Yes (1) | No   

Sravya Reddy V  (11 years ago)

I think mother has a correct deduction.
when Nisha not sleeping.Eesha is not drinking
hence nurse conclusion is wrong.
It is given Usha and Nisha never sleep at a time
and It doesn't mean that Usha never sleep.

Is this solution Helpfull? Yes (1) | No   

Satwiki De  (11 years ago)

It is mentioned that both Usha and Nisha never sleeps at the same time. Suppose,
1. When Usha sleeps, Nisha is awake, but as mentioned in the question, Eesha drinks milk.
2. When Nisha sleeps, Usha is awake, but similarly Eesha drinks.
Hence, the nurse has made the correct deduction.

Is this solution Helpfull? Yes (1) | No   

muttareddy veera mani devi  (11 years ago)

i think mother's is a correct detection

Is this solution Helpfull? Yes (1) | No   

Rudra  (11 years ago)

@aamir alam which is the right answer?????

Is this solution Helpfull? Yes | No   

Unmesh N  (11 years ago)

i think answer is father and mother...
Eesha drinka milk only if both usha and nisha are sleeping.- it never happens.

Is this solution Helpfull? Yes | No (1)  

Nikunj Pitroda  (11 years ago)

Usha-If Usha is sleeping - No case
Nisha-If Nisha is not sleeping - No case
Eesha-Eesha is drinking milk - Eesha is not drinking.
Check Deduction :
Father-Usha never sleeps
Mother-Nisha never sleeps.
Nurse-Eesha always drinks.

Finally Mother is correct.

Is this solution Helpfull? Yes | No (1)  

Akash Nigam  (11 years ago)

Mothers conclusion is right.
Explaination:
Fathers conclusion is wrong because usha sleeps as per statement 1.
Nurse conclusions is wrong as well because esha doesnt drink as mentioned in second statement.
Thus mothers conclusion is correct.

Is this solution Helpfull? Yes | No (1)  

paramesh satya  (11 years ago)

according to given data..if nurse conclusion is correct then father and mother conclusion went wrong.so nurse made a correct deduction.

Is this solution Helpfull? Yes | No   

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