Madoka chooses 4 random numbers a, b, c, d between 0 and 1. She notices that a+b+c=1. If the probability that d>a, b, c can be written in simplest form as \frac{m}{n}, find m+n.
Madoka chooses 4 random numbers a, b, c, d between 0 and 1. She notices that a+b+c=1. If the probability that d>a, b, c can be written in simplest form as \frac{m}{n}, find m+n.