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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

如果n是19的话n+1才是20。那a20不是应该等于a19+19吗,为什么会加20呢?条件二给的公式不是说a(n+1)=a(n)+n吗?我算的是1+2+...+19+19这样

解答:

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阅读256452
解答: 徐小梅

提问:

PS:问49.987*9.879/0.253化简结果最接近哪一个? 选项a.b.c忘记了,d是1700,e是1800

解答:

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阅读221478
解答: sysadmin老师

提问:

数学书60页32题,有多少小于20的正整数等于3的正倍数与4的正倍数只和,答案说10个,我怎么查都是11个

解答:

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阅读221190
解答: sysadmin老师

提问:

PS:一个数是两位数,这个数大于11,个位数和十位数加起来的和是质数,问这样的 数有多少个?

解答:

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阅读221049
解答: sysadmin老师

提问:

57)If m is a positive odd integer between 2 and 30, then m is divisible by how many different positive prime numbers? 1)m is not divisible by 3. 2)m is not divisible by 5. 条件1 我理解的是 M 只能2到30之间,那么就有5,7,11,13,17,19,23,29,这么多个prime numbers. 条件2 我理解的是 M 可以是 3,7,9,11,13,17,19,21,23,27,29 这些,21可以被3和7除, 我判断条件1完全可以,条件2 我不太确定

解答:

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阅读221236
解答: sysadmin老师

提问:

62)if d is the positive integer and f is the product of the first 30 positive integers what is the value of d? (1) 10d is a factor of f. (2) d > 6 这个题目说d 是一个正整数,f 是30!阶乘,d的值多少, 这个题应该怎么推理?

解答:

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阅读221271
解答: sysadmin老师

提问:

DS:说一个整数N,最大不超过50,把从1到N的所有数拉出来列一起,数字里出现4的数字有几个? 条件1:这些数里出现0的个数是出现4的个数的数字少11; 条件2:说N这个数是某个prime number的平方

解答:

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阅读220803
解答: sysadmin老师

提问:

错选了D,麻烦老师分析一下这题的时态!

解答:

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阅读220584
解答: sysadmin老师

提问:

错选了最后一个,麻烦老师讲解一下!

解答:

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阅读220166
解答: sysadmin老师

提问:

老师麻烦讲解这道题 Making things even more difficult has been general market inactivity lately, if not paralysis, which has provided little in the way of pricing guidance. A has been general market inactivity lately, if not paralysis, which has provided B there is general market inactivity, if not paralysis, lately it has provided C general market inactivity, if not paralysis, has lately provided D lately, general market inactivity, if not paralysis, has provided E is that lately general market inactivity, if not paralysis, which provides

解答:

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阅读220090
解答: sysadmin老师

提问:

讲解~

解答:

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阅读220096
解答: sysadmin老师

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