試題詳解

(51) Which of the followings is wrong about this representation of N?
(A) There can be more than one digit for a.
(B) The representation can be found by a greedy algorithm.
(C) We can use it as a number system to represent positive integers.
(D) This representation can be generalized as N= Bino(a, 4) + Bino(b, 3) + Bino(c, 2)+ Bino(d, 1), where a ＞ b＞ c＞ d ＞=0.
(E) The representation may not be unique for some positive N.