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[Problem Solving] 试题详情

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?

Options:

Three
Four
Five
Six
Seven

Correct:

E

[Problem Solving]

提问：

May老师，这个真的一点思都没有呀[捂脸]
徐小梅
0评分
70浏览

[Official Advanced]Problem Solving

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
May老师，这个真的一点思都没有呀[捂脸]
1评分
170浏览

[Official Advanced]Problem Solving

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
想问问老师7是怎么算出来的呀？这题是要用排列组合计算方法算吗？

问个问题

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0评分
2890浏览

[Undefined]Issue Essay

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
老师您好，这道题的题目有一点看不懂，请问是什么意思以及为什么选d？

解答：

2评分
573浏览

[GWD]Sentence Correction

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
这道题为什么so后面要加to do，不是应该加句子么？并且B和C有什么区别么？

解答：

1评分
551浏览

[Undefined]Critical Reasoning

Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10 ?
老师你好，在这道题中我的纠结选项是D和E。D选项说，除去这个S，不会有其它的物质会提高酒精过敏。那就会说明，除去S在酒精里不会让人过敏。是不是这个apart有影响呢。谢谢老师。

解答：

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