If you have a difficult time, I’ll support and encourage you until the end.(see through)
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Don’t throw the plastic bags away, as they may be useful sometime. (come in handy)
It is good for you to know what you don’t know. (pay)
公式(¬P∧Q)∨(¬P∧¬Q)化简为( ),公式 Q→(P∨(P∧Q))可化简为( )。
概率论与数理统计研究的对象是什么
A. 随机现象
B. 确定现象
C. 随机现象和确定现象
D. 两者都不是