all of the stocks on the over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 26 letters of the alphabet. which of the following gives the maximum number of different stocks that can be designated with these codes? (A) 2(26^5) (B) 26(26^4) (C) 27(26^4) (D) 26(26^5) (E) 27(26^5) 脑子短路了，过程都想不起来了~
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2011-5-7 16:38:26
收藏
收藏
