Probability

The Two-Umbrella Commute

Difficulty
x xxxxxxxx xxxxxxx xxxx xxxx xx xxxx xxxx xxxxxxx xxx xxxxxxx xxxx xxxx xxxxxxx. xxxx xxx xxxxxxx xxx xxxxxxxxx, xxxx xxxxxxxxx xx xxxx. xx xxxx xxxx, xx xxxxx xxxxxxxxxxxxx xxxx xxxxxxxxxxx \(x\), xxxxx \(x \xxx x \xxx x\). xx xx xxxxx xxx xx xxxxxxxx xx xxxxxxxxx xx xxxxx xxxxxxxxx xxxxxxxx, xxxx xxxx xxx xx xxxxx xxxxxxxxxxx. xx xx xxxx xxx xxxx, xxxx xxxxx xxx xxxxxxxxx xxxxx xxxx xxx. xxxx xxx xxx xxxx xxxx xx xxxxx xxx xx xxxxxxxx xx xxxxxxxxx. xxxx xx xxx xxxx-xxx xxxxxxxx xx xxxxx xx xxxxx xxx xxxxxxxx xxxx xxx?

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