Matching Three-Coin Flips

Probability
xxx xxx xx xxxxxxxx xxxx xxxxxxxxxxxxx xxxx xxxxx xxxx xxxxx. xx xxx xxxxxx xxx xxxx xxxxxx xx xxxxx, xxxx xxxxxxxx xxxx xxx \(\$x\). xx xxx xxxxxxx xx xxxxx xxxxxx, xxx xxx xxxx xxxxxxxx \(\$x\). xxxxxxxx xxx xxx xxxx-xxxxxxx, xxxxxx xxx xxxx?

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