Probability

Exit Time from a Square Grid

Difficulty
x xxxxxxxx xxxxxx xx xxxxxxx xxxxx \((x,x)\) xx xxx xxxxxx xxxx \(\{x,\xxxxx,x\}^x\). xx xxxx xxxx, xx xxxxxxxxxxxxx xxxxx xx, xxxx, xxxx, xx xxxxx, xxxx xxxx xxxxxxxxxxx \(x/x\). xxx xxxx xxxxx xxxx xx xxxxx xxxxxxx x xxxxx xxxxxxx xxx xxxx, xxxxxxxx xxx xxxxx xxxx xx x xxxx. xxxxxxxxx xxx xxxxxxxx xxxxxx xx xxxxx xxxxx xx xxxxx, xxx xxxxxxx xxx xx xxxxxxx xx xxx xxx xxxxx \(x\), \(x\), xxx \(x\).

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