JOAHANA'S PREGNANCY

Joahana is pregnant with six children. She wants to know different possibilities.


a) Find out the different possibilities of girls to boys ratio

BOYS 6 5 4 3 2 1 0
GIRLS 0 1 2 3 4 5 6

WHY? This is really easy to explain. You make a sort of chart to make it easier to read then you just have to put all the possibilities of boys you can have then subtract the number of boys from six to find out how many girls you can have with that amount of boys.

b) What are the chances the first child will be a girl and the last child a boy?

The answer is 1/4

WHY? First off we multiply two six times to find out how many possibilities there are all together. We use two because that's how many possibilities there are to have a girl or boy for all six children that come out. We then have to find the possibilities for the first one coming out a girl and the last a boy. That's why we switch the 2's in the first and last spots to ones, there is only one possibility. Once we get the sum of both we put the equation with specifications on the top and the one with all possibilities, we then have to reduce the fraction to get our answer.