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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
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必须走5步，且3个向上2个向右。5步选3步向上 or 5步选2步向右。
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