In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from $1$ to $10$, and one SuperBall is drawn (at random) from ten red balls numbered from $11$ to $20$. When you buy a ticket, you choose three numbers from $1$ to $10,$ and one number from $11$ to $20$.

If the numbers on your ticket match at least two of the white balls or match the red SuperBall, then you win a super prize. What is the probability that you win a super prize?

Guest Aug 11, 2021

#1**+1 **

please help this is what i got but it was wrong

1/10 chance of getting a red ball

case getting two balls:

1/10*1/9 = 1/90

case getting three balls:

1/10*1/9*1/8 = 1/720

1/90 + 1/720 = 1/80

1/80 + 1/10 = 9/80

Guest Aug 11, 2021