Record your races with a typeracer account:
Create Your Account- Save your race history and scores.
- Customize your profile and racecar.
- It’s free, why not?
Race Result Details |
Racer | Hannah (hdimare) |
Race Number | 80 |
Date | Mon, 17 Sep 2018 15:36:30 +0000 |
Speed |
61 WPM
![]() |
Accuracy | 94.7% |
Rank | 2nd place (out of 2) |
Opponents | lj1120 (1st place) |
Text typed:
|
Property (c) is known as countable additivity. It is not something that can be proved, but it is like an assumption or an axiom. In our experience, we have seen that operating as if the assumption is correct leads to useful and credible answers to many problems, so we accept it as a reasonable assumption. Not all probabilists agree that countable additivity is natural.
— Fundamentals of Probability: A First Course
|