![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
口袋内装有一些大小相同的红球、白球和黑球,从中摸出1个球,摸出红球的概率是0.42,摸出白球的概率是0.28,那么摸出黑球的概率是()
A.0.42
B.0.28
C.0.3
D.0
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、0.3
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.0.42
B.0.28
C.0.3
D.0
C、0.3
A.至少有1个红球与都是红球
B.至少有1个红球与至少有1个白球
C.恰有1个红球与恰有2个红球
D.至多有1个红球与恰有2个红球
A.15
B.16
C.17
D.18
A.4/15
B.7/15
C.8/15
D.11/15
E.13/15
A.红
B.白
C.蓝
D.黑