試題詳解

197. A drawer contains four pairs of socks, with each pair a different color. One sock at a time is randomly drawn from the drawer until a matching pair is obtained.

Calculate the probability that the maximum number of draws is required.
(A) 0.0006
(B) 0.0095
(C) 0.0417
(D) 0.1429
(E) 0.2286