kindly help me.....
it would sharpen your brain too...
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A . Families having 3 girl chids = 100 i.e . they dont have any boy child
so required probability=750-100 /750
= 650/750
= 65/75
= 13/15
B.
See 120 famipies dont have any girl child so required probability
= 120/750
= 12/75
= 4/25
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