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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!
Read Solution (Total 4)
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- 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 - 12 years agoHelpfull: Yes(20) No(1)
- Ans: b
(1/2)^11=2048 - 12 years agoHelpfull: Yes(5) No(5)
- 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) - 12 years agoHelpfull: Yes(3) No(1)
- ans is 2048
- 12 years agoHelpfull: Yes(1) No(3)
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