Money & Business
Decision trees and dealing with uncertainty
...works because they're what we call mutually exclusive events. A number greater than 3 cannot be both odd and even. So each of the numbers: 4, 5, and 6 can only be an even number or an odd number. And when you have mutually exclusive events, you can do this adding up calculation. So one way of calculating the probability of an outcome is to compare the number of ways that...