Families 2

Seven hundred twenty-nine families are having six children each. The probability of a girl is 1/3, and the probability of a boy is 2/3. Find the number of families having two girls and four boys.

Correct answer:

n =  240

Step-by-step explanation:

C2(6)=(26)=2!(62)!6!=2165=15  p=(26) (31)2 (32)4=15 (31)2 (32)4=243800.3292  n=729 p=729 0.3292=240

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Showing 2 comments:
Math student
The correction notation is p = 6 combination 2 and not 2 combination 6

Thanks, we just exange 6 and 2


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