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Plz help me with this PS prob [#permalink]
24 Jun 2009, 06:31
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All of the stock on over-the-counter market are designated by either a 4-letter or 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)