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Problem 74, page 113. In successive rolls of a pair of fair dice, what is the probability of getting 2 sevens before 6 even numbers?
 

Summary: Problem 74, page 113. In successive rolls of a pair of fair dice, what is the probability of getting 2
sevens before 6 even numbers?
Let A, B and C be the events that you get a seven, and even number, or neither on a given roll,
respectively. Thus
P(A) =
6
36
=
1
6
, P(B) =
18
36
=
1
2
, P(C) = 1 - P(A) - P(B) =
1
3
.

  

Source: Allard, William K. - Department of Mathematics, Duke University

 

Collections: Mathematics