设X,Y为两个随机变量,且P{X ³0,Y ³ 0} = 3/7 , P{X ³ 0} = P{ Y ³ 0} = 4/7 ,则P{max(X, Y) ³ 0} = ( ). A: 1/7 B: 3/7 C: 4/7 D: 5/7
设X,Y为两个随机变量,且P{X ³0,Y ³ 0} = 3/7 , P{X ³ 0} = P{ Y ³ 0} = 4/7 ,则P{max(X, Y) ³ 0} = ( ). A: 1/7 B: 3/7 C: 4/7 D: 5/7
int x = 1, y =6; A: x = 6 y = 0 B: x = 7 y = 0 C: x = 6 y = -1 D: x = 7 y = -1 E: Compilation fails.
int x = 1, y =6; A: x = 6 y = 0 B: x = 7 y = 0 C: x = 6 y = -1 D: x = 7 y = -1 E: Compilation fails.
阅读以下程序,选择程序的输出结果 A: x = -5 y = -1 B: x =- 7 y = 0 C: x =- 6 y = -1 D: x = 7 y = -1
阅读以下程序,选择程序的输出结果 A: x = -5 y = -1 B: x =- 7 y = 0 C: x =- 6 y = -1 D: x = 7 y = -1
阅读下面的java语言代码,输出结果是( )。 int x, y = 1, z=0; if( z < 0 ) x= 3; else if ( y == 0 ) x= 5; else x= 7; System.out.println(x+”,”+ y); A: 7, 0 B: 7, 1 C: 3, 3 D: 以上都不正确
阅读下面的java语言代码,输出结果是( )。 int x, y = 1, z=0; if( z < 0 ) x= 3; else if ( y == 0 ) x= 5; else x= 7; System.out.println(x+”,”+ y); A: 7, 0 B: 7, 1 C: 3, 3 D: 以上都不正确
若要求:当数学式3 A: if(x>3)if(x<7)y=1; B: if(x>3||x<7)y=1; C: if(x<3);elseif(x<7)y=1 D: if(!(x<=3))y=y;elseif(7>x)y=1;
若要求:当数学式3 A: if(x>3)if(x<7)y=1; B: if(x>3||x<7)y=1; C: if(x<3);elseif(x<7)y=1 D: if(!(x<=3))y=y;elseif(7>x)y=1;
下列语句的执行结果是40。x = [4, 0, 7]y = str(x[0]) + str(x[1])print(y)
下列语句的执行结果是40。x = [4, 0, 7]y = str(x[0]) + str(x[1])print(y)
中国大学MOOC: 设X,Y为两个随机变量,且P{X ³0,Y ³ 0} = 3/7 , P{X ³ 0} = P{ Y ³ 0} = 4/7 ,则P{max(X, Y) ³ 0} = ( ).
中国大学MOOC: 设X,Y为两个随机变量,且P{X ³0,Y ³ 0} = 3/7 , P{X ³ 0} = P{ Y ³ 0} = 4/7 ,则P{max(X, Y) ³ 0} = ( ).
下列的for语句的循环次数为______。 for(x=1,y=0;(y!=19)&&(x<7);x++);
下列的for语句的循环次数为______。 for(x=1,y=0;(y!=19)&&(x<7);x++);
下面的C语言代码,输出结果是:( )int x, y, z;y=1;z=0;if ( z <; 0 ){x = 3;}else if ( y = = 0 ){x = 5;}else{x = 7;}printf("x=%d",x); A: x=3 B: x=5 C: x=7 D: x为随机数
下面的C语言代码,输出结果是:( )int x, y, z;y=1;z=0;if ( z <; 0 ){x = 3;}else if ( y = = 0 ){x = 5;}else{x = 7;}printf("x=%d",x); A: x=3 B: x=5 C: x=7 D: x为随机数
Simplify the expression:$({\frac{3x^{3/2}y^3}{x^2y^{-1/2}})^{-2}}$Which answer is CORRECT? A: $9xy^7$ B: $\frac19 xy^{-7}$ C: $\frac19 x^{-1}y^7$ D: $9 x^{-1}y^7$
Simplify the expression:$({\frac{3x^{3/2}y^3}{x^2y^{-1/2}})^{-2}}$Which answer is CORRECT? A: $9xy^7$ B: $\frac19 xy^{-7}$ C: $\frac19 x^{-1}y^7$ D: $9 x^{-1}y^7$