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已知的展开式中的常数项为A.10B.20C.30D.120
试题详情
已知
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAjCAYAAADrJzjpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
的展开式中的常数项为( )
A.10
B.20
C.30
D.120
相关试题
-
已知
的展开式中的常数项为( )
A.10
B.20
C.30
D.120
-
若(x+
)n展开式的二项式系数之和为64,则展开式的常数项为( )
A.10
B.20
C.30
D.120
-
若(x+
)n展开式的二项式系数之和为64,则展开式的常数项为( )
A.10
B.20
C.30
D.120
-
已知圆的方程为x2+y2-6x-8y=0,设该圆过点(3,5)的最长弦和最短弦分别为AC和BD,则四边形ABCD的面积为( )
A.10![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.20![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
C.30![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
D.40
-
已知圆的方程为x2+y2-6x-8y=0,设该圆过点(3,5)的最长弦和最短弦分别为AC和BD,则四边形ABCD的面积为( )
A.10![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.20![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
C.30![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
D.40
-
已知圆的方程为x2+y2-6x-8y=0,设该圆过点(3,5)的最长弦和最短弦分别为AC和BD,则四边形ABCD的面积为( )
A.10![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC5SURBVDhP1ZGxDcQgDEU9FwXj0HsTagahZZAU
jPIPY3McOqRw6e5LkRL4z992CBsR0dlj/kVycaJ/gWuCl1nJI9Uf4Jr8Gxo6gwu3M0axz6EDuCJ5
ArMU0F/EVuUetlQuSny2fwt3s08tf6iALf0BrGP4Fk3IoZuJgl3u257Lsh1Ics65H0VHcPHq7wts
ZhpbkmLWyXT1DjR9hUU6p3Y4u1hcoV1K+je81+K6ogO5+AwWSfpjWHQGAy+uWIPqOqi+ggAAAABJ
RU5ErkJggg==
)
B.20![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC5SURBVDhP1ZGxDcQgDEU9FwXj0HsTagahZZAU
jPIPY3McOqRw6e5LkRL4z992CBsR0dlj/kVycaJ/gWuCl1nJI9Uf4Jr8Gxo6gwu3M0axz6EDuCJ5
ArMU0F/EVuUetlQuSny2fwt3s08tf6iALf0BrGP4Fk3IoZuJgl3u257Lsh1Ics65H0VHcPHq7wts
ZhpbkmLWyXT1DjR9hUU6p3Y4u1hcoV1K+je81+K6ogO5+AwWSfpjWHQGAy+uWIPqOqi+ggAAAABJ
RU5ErkJggg==
)
C.30![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC5SURBVDhP1ZGxDcQgDEU9FwXj0HsTagahZZAU
jPIPY3McOqRw6e5LkRL4z992CBsR0dlj/kVycaJ/gWuCl1nJI9Uf4Jr8Gxo6gwu3M0axz6EDuCJ5
ArMU0F/EVuUetlQuSny2fwt3s08tf6iALf0BrGP4Fk3IoZuJgl3u257Lsh1Ics65H0VHcPHq7wts
ZhpbkmLWyXT1DjR9hUU6p3Y4u1hcoV1K+je81+K6ogO5+AwWSfpjWHQGAy+uWIPqOqi+ggAAAABJ
RU5ErkJggg==
)
D.40
-
某班有50名学生,一次考试的成绩ξ(ξ∈N)服从正态分布N(100,102).已知P(90≤ξ≤100),估计该班数学成绩在110分以上的人数为( )
A.10
B.20
C.30
D.40
-
已知圆的方程为x2+y2-6x-8y=0,设该圆过点(3,5)的最长弦和最短弦分别为AC和BD,则四边形ABCD的面积为( )
A.10![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.20![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
C.30![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
D.40
-
已知圆的方程为x2+y2-6x-8y=0,设该圆过点(3,5)的最长弦和最短弦分别为AC和BD,则四边形ABCD的面积为( )
A.10![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.20![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
C.30![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
D.40
-
100件产品中任取1件,是次品的概率是0.2,则其中次品件数为( )
A.10
B.20
C.30
D.40