设数集同时满足条件
①中不含元素
,②若
,则
.
则下列结论正确的是 ( )
A.集合![]() |
B.集合![]() |
C.集合![]() |
D.集合![]() |
从一批产品中取出三件,设A=“三件产品全不是次品”,B=“三件产品全是次品”,C = “三件产品不全是次品”,则下列结论正确的是()
A.A与C互斥 | B.B与C互斥 |
C.任两个均互斥 | D.任两个均不互斥 |
如果执行下面的程序框图,那么输出的()
A.22 | B.46 | C.![]() |
D.190 |
下图是计算1+3+5+…+99的值的算法程序框图, 那么在空白的判断框中, 应该填入下面四个选项中的()
A. i≤101 | B. i≤99 | C. i≤97 | D. i≤50 |
已知变量a、b已被赋值,要交换a、b的值,采用的算法是()
A.a =" b," b =" a" | B.a =" c," b =" a," c =" b" |
C.a =" c," b =" a," c =" a" | D.c =" a," a =" b," b = c |
以下程序输入2,3,4运行后,输出的结果是(▲)
INPUT a,b,c
a=b
b=c
c=a
PRINT a,b,c
A.2 3 4 | B.3 2 4 | C.3 4 3 | D.3 4 2 |