12. Out of 2000 families with 4 children each, the number of families you would expect to have no girls is
1
1 1
p

2 thoughts on “12. Out of 2000 families with 4 children each, the number of families you would expect to have no girls is<br />1<br />1 1<br />p”

1. Answer:

   1250

   Step-by-step explanation:

   probability of 1 girl = 4c1*(1/2)*(1/2)^3=1/4

   probability of 2 girls = 4c2*(1/2)^2 * (1/2)^2= 3/8

   So the OR of the above = (1/4)+(3/8)=5/8

   So again, expected no. of families with that criteria = 5/8 * 2000 = 1250

   I think you give wrong answer in D, Please mark me as brilliant

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2. Answer:

   may be 150 families wouldn’t have girls

   Reply