A
researcher plans to identify each participant in a certain experiment with a
code consisting of either a single letter or a pair of distinct letter written
in alphabetical order. What is the least number of letters that can be used if
there are 12 participants, and each participant to receive a different code?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
No comments:
Post a Comment