请教一道概率题,问题如下。Suppose that n independent trials, each of whic
请教一道概率题,问题如下。
Suppose that n independent trials, each of which results in any
of the outcomes 0, 1, or 2, with respective probabilities p0, p1, and p2,
p0+p1+p2=1, are performed. Find the probability that outcomes1 and 2 both
occur at least once.