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

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?

 Aug 10, 2021
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The probability is C(7,3)*3*C(11,2)/(10*1200) = 77/160.

 Aug 11, 2021

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