从0，1，2，3，4这5个数字中，任取3个组成三位数，其中奇数的个_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

从0，1，2，3，4这5个数字中，任取3个组成三位数，其中奇数的个数是______．

答案

从1，3中取一个排个位，故排个位有

A

12

=2种方法；

排百位不能是0，可以从另外3个数中取一个，有

A

13

=3种方法；

排十位有

A

13

=3种方法．故所求奇数个数有2×3×3=18个．

故答案为：18

阅读理解

Anna lived on the side of a valley. One winter, there was a very big flood, and a lot of houses       Anna's were washed away. Anna's house was high enough to escape the flood, so when the water had disappeared and the other houses were       there with no roof and no walls and all covered with mud(泥) , her house was       quite all right.
Her house was quite small, her husband was dead, and she had four children ,      Anna took in one of the families that had lost         in the flood and she       her home with them until it was        for them to rebuild their houses.
Anna's friends were puzzled （迷惑的）when they saw Anna do this. They could not understand why Anna wanted to give       so much more work and trouble when she already had quite a few children to support .
"Well," Anna       her friends, "at the end of the First World War, a woman in the town where I later lived found herself very poor, because her husband         in the war and she had a lot of children,        I have now. The day before Christmas, this woman said to her children, ‘We won’t be able to have much for         this year, so I’m going to         only one present for all of us. Now I’ll go and get it.’ She came back         a girl who was even poorer than they, and who had no parents. ‘Here’s our present, ’ she said to her children. The children were happy to get such a present. They welcomed the little girl, and she grew up as their sister.         was that Christmas present.”

B．just around

A．explained to

C．talked with

B．might be killed

C．had been killed

B．your birthday

问答题

某家商场为了了解前来该商场购物的顾客的学历分布情况，随机抽取了100名顾客。其学历表示为：1：初中，2：高中或中专，3：大专，4：本科及以上。调查结果如表2-1所示。

表2-1

4	2	2	2	4	3	4	4	1	4	2	2	4	4	4	3	2	4	2	2	3	1	2	1
4	1	4	2	4	2	3	3	2	1	3	4	3	4	4	3	3	1	2	4	2	4	3	2
2	3	2	2	2	1	2	2	4	4	2	1	2	3	3	3	3	3	3	4	2	3	4	3
1	3	2	3	2	4	3	1	3	4	3	4	2	1	4	2	2	4	2	3	3	4	1	2

表2-1中的数据属于什么类型