Question

甲乙两人射击气球的命中率分别为0.6和0.7,则两人同时射击气球时,气球只被一人击中的概率是几

Answer 1

有两种方法来

1、0.6×(1-0.7)+(1-0.6)×0.7

=0.6×0.3+0.4×0.7

=0.18+0.28

=0.46

2、1-0.6×0.7-(1-0.6)×(1-0.7)

=1-0.42-0.4×0.3

=1-0.42-0.12

=0.46