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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


)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


Grade:

1 Answers

Ashwin Muralidharan IIT Madras
290 Points
10 years ago

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).

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