hard · GMAT Quant
A robot travels from (0,0) to (7,6) using only moves one unit right or one unit up, and every shortest path is equally likely.
Given that its path passes through exactly one of A=(2,3) and B=(3,2), and does not pass through C=(4,4), what is the probability that it passes through D=(6,4)?
- dfrac111
- dfrac27112
- dfrac45112
- dfrac1522
- dfrac922
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