in a family of 3, the probability of having at least one boy is
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In a family,there will be a father,mother and a child.The child's may be a girl or a boy.So,the probability of having at least one boy in a family is 1/3 .
lohithanaidu:
I think the question is wrong
this question is of 10th board question paper
Could you plz check the question?
question paper in my hand
But I'm thinking that 1/3 is the correct answer......
but the options are 7/8, 1/8, 5/8, 3/4
Sorry...
for what
I haven't got the correct answer..
koi baat nahi seriously mat lo
Answered by
4
7/8 is the probability of having at least one boy
at least 1 boy = 1 - p(none boy )
s = {BBB BBG BGG GGG GGB GBB BGB GBG }
P(at least one boy)=1 - P(none)
= 1 - ( GGG)
= 1- 1/8
= 7/8
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at least 1 boy = 1 - p(none boy )
s = {BBB BBG BGG GGG GGB GBB BGB GBG }
P(at least one boy)=1 - P(none)
= 1 - ( GGG)
= 1- 1/8
= 7/8
------------------------------------------------------
options are 7/8, 1/8, 5/8, 3/4
report my ans
if erong
wrong
sorry
koi baat nahi seriously mat lo
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