Latest TCS Aptitude Question SOLUTION: 6.there are 12 children in a family .the youngest 1 is a boy.then find the probabality of finding boy in the family. a)4096 b)2048 c)2 d)2!

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6.there are 12 children in a family .the youngest 1 is a boy.then find the probabality
of finding boy in the family.
a)4096
b)2048
c)2
d)2!

Asked In TCS krishnaprasad TATA (11 years ago)

Unsolved Read Solution (4)

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Read Solution (4) :

Ajit  (11 years ago)

Probability cannot be more than 1..it ranges from 0 to 1..
there can be two options..either a boy/girl in a family
asked is to find a boy=1/2
given 12 children but it is already mentioned that the youngest is a boy so no need to count that..
hence,1/2*1/2*1/2......(11 times)=1/2048 option b..but the option is wrong..it should be 1/2048

Is this solution Helpfull? Yes (20) | No (1)  

Raj Kumar  (11 years ago)

Ans: b
(1/2)^11=2048

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

PARAG KAMRA  (11 years ago)

all the option given is wrong,first thing always keep in mind that probability can not be greater than 1.
so answer will be (1/2............11 times)=1/2048(ans)

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

Shivendra Bhardwaj  (11 years ago)

ans is 2048

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

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