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题库 / GMATAdvanced-PS-5
Pat will walk from intersection X to intersection Y along a route that is confined to the square grid of four streets and three avenues shown in the map above. How many routes from X to Y can Pat take that have the minimum possible length?
Six
Eight
Ten
Fourteen
Sixteen
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
就相当于是用五根木棍（两横三竖的）排列组合：｜－｜－｜
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