AnimalMaster

Thank you so much Melody! 

a) There are 10C3 = 120 possibilities for the 3 white balls that are drawn (since we don't care about the order), and 10 possibilities for the SuperBall. Thus there are 120*10 equally-likely winning numbers, and since your ticket must match the winning numbers, you have a 1/1200 chance of winning the jackpot.

b) I don't know the answer. 

You're welcome!

I think it's a typo, it's 14/27, not 4/27. nice job tho!

I'm not that good with ratios but I'll give it a shot:

3 men to 5 women:

We can add the variable x:

3x + 5x = 208

8x = 208

x = 26

3 * 26 = 78 men,

5 * 26 = 130 women.

Check for me, I may be wrong.

Well, since there are 5 boys of 12 students, we can subtract the total amount of students by the amount of boys to find the girls:

12 - 5 = 7.

Now that we know the amount of girls and boys, the ratio of boys to girls is:

a) 5 : 7.

And girls to all students is:

b) 7 : 12

Let's see you do it

Lol