GWD数学题目困惑 请大家解答啊~~~谢谢谢谢好心人

joanna5200

Each · in the mileage table above represents an entry indicating the distance between a pair of the five cities. If the table were extended to represent the distances between all pairs of 30 cities and each distance were to be represented by only one entry, how many entries would the table then have?                                    

• A60
• B435
• C450
• D465
• E900
  这个题目说的是啥意思呢？？看了半天没看懂让干啥？请大家帮忙给翻译一下吧 谢谢大家了~~~在此谢过~~~
  

xdnbbxx

C30 2=435            

joanna5200

xdnbbxx 发表于 2013-10-5 19:01
C30 2=435

可以帮忙解释一下题目吗？谢谢啦

binger0328

同问
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