What is the probability that two parents will produce 3 children all of the same s*x?

Question

The children can be boy or girl. I think it is either 1/8 or 1/4 but I'm not sure.

Answer 1

12.5%.

50% for each for the first child

multiplied by 50% for the second child

multiplied by 50% for the third child.

1/2 x 1/2 x 1/2 =1/8 or 12.5%

Answer 2

Well, actually the odds are 25%, since there are equal odds of having 3 boys and 3 girls.

50% x 50% x 50% x2

LEWSORZ!!

;)

Answer 3

1/8

ever seen a punet square?

__|X__|_Y_

X  |XX | XY

Y   |XX | XY

well XY is boy, XX girl

so 50% cubed(to the third power) or 12.5% chance

Answer 4

It's 1/4.  There is a 50% chance of getting a boy.  So the chance of getting 3 boys is:

1/2 * 1/2 *1/2 = 1/8

And there is the same probability of getting 3 girls.  So the total chance of getting all children of the same s*x is:

1/8 +1/8 = 2/8 = 1/4

Answer 5

For every 100 female human births there are, on average, 105 male births.  So, the empirical probability that any birth is male is 105/205 = .512.  The empirical probability of three consecutive male births is thus .1344.  The empirical probability of three consecutive female births is .1161.  The sum of those is about .2505 or about 1/4.

But that's just empirical probability.  Many factors influence this probability,  These include time of fertilization compared to the time of ovulation, depth of penetration, pH, temperature, and many others.  Parents with consistent mating practices have a much higher probability of producing children of the same gender.

Answer 6

There are some good probability tutorials for this kind of stuff on the net.

http://theschoolpad.blogspot.com/2008/03...

Answer 7

50/50

Its a 50/50 for each one, so if my Biology teacher was correct, its a 50/50 chance that they'd all be the same gender.