Re: [計量] 請教一題數學
※ 引述《ptkuo ()》之銘言：
: A company that ships boxes to a total of 12 distribution centers
: uses color coding to identify each center. If either a single color
: or a pair of two different colors is chosen to represent each center
: and if each is uniquely represented by that choice of one or two
: colors, what is that minimum number of colors need for the coding?
: (Assume that the order of the colors in a pair does not matter.)
: (A) 4
: (B) 5 ---Ans.
: (C) 6
: (D) 12
: (E) 24
: 可以麻煩大家幫忙解題嗎？
n+C(n,2)>=12
n=4 4+6=10
n=5 5+10=15
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