Probability

Random Walk on a Cube: Hitting the Opposite Vertex

Difficulty
xxx xxxxx xx x xxxxxx xx x xxxx. xxxx xxxxxx xxx xxxx xxxxx xxx xxxxxxxx xxxx xxxxxx xxxxxxxxx xx xxxxxx (xx xxxx xxx xxxxxx xxx xxxx xxx xx xxx x xxxxxxxxx xxxx xxxxxxxxxxx \(x/x\)). xxx \(x\) xx xxx xxxxx xxxx xxx xxxxx xxx xxxxxx xxxxxxxx xxxx xxxxxxxx xxxxx (xxxxx xxxxxxxx x). xxxx xx \(\xxxxxx{x}[x]\)?

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