Question 998248
Well, one way to do this is to look at row 5 of Pascal's Triangle...
The numbers represent the number of chances out of 32 possible ways to have 5 kids...
1,5,10,10,5,1
Thus there is 1/32 to have 5 boys, 5/32 to have 4 boys, and 10/32 chance to have three boys...adding the chances together...you get
16/32 = 1/2 to have at least three boys.