Pablo plays 3 rounds of a game, in which his chances of winning each round are 1/2, 1/4, and 1/n, respectively. If n ≠ 0, what is the probability that Pablo wins the first two rounds, but loses the third? Choose the correct answer.
A) 1/16n
B) (n-1)/8n
C) 1/2n
D) (n+2)/2n
E) (3n-2)/2n
1/2 * 1/4 * (1-1/n)   = 1/8 * (n-1)/n   = (n-1)/8n   Answer - (n-1)/8n
<result>B</result>
Pablo plays 3 rounds of a game, in which his chances of winning each round are 1/2, 1/4, and 1/n, respectively. If n ≠ 0, what is the probability that Pablo wins the first two rounds, but loses the third?