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)One person has 2 child.At least one of them was a girl.Then the Probability that 2 of the are girl is_____ a)1/2 b)1/4 c)0.36 d)1

sandhiya murali , 14 Years ago
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anser 1 Answers
Ashwin Muralidharan IIT Madras

Hi Sandhya,

 

It is already given that one of then is a girl.

 

G=Girl

B=Boy.

 

So possibilties are GB,GG.

Out of which GG is the favourable case. So ans = 1/2 Option (A).

 

 

Best Regards,

Ashwin (IIT Madras).

Last Activity: 14 Years ago
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