*P*, the probability that it would win any one game. The playoffs can be 1, 3, 5, or 7 games.

A 1-game playoff is easy. It's just

*P*.

A 3-game series (first team to win 2 games) is:

Code:

` P(win) = PP + PQP + QPP = P^2 + 2*Q*P^2`

*Q*= 1-

*P*.

A 5-game series is:

Code:

```
P(win) = PPP + PPQP + PQPP + QPPP + PPQQP + PQPQP + PQQPP + QPPQP + QPQPP + QQPPP
= P^3 + 3*Q*P^3 + 6*Q^2*P^3
```

Code:

` P(win) = P^4*(1 + 4Q + 10Q^2 + 20Q^3)`

Is there a general formula for an n-game series?