数学JJ总汇 (9/25 上午9:30更新至479题)

黄公子

所以333已经是置顶贴说的400JJ的全部了吧

sjeffrry

MingLiU","serif"; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt;">1.        34 一个四边形和一个圆相交，问交点的个数？MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">
        MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

答案是最多MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">8个最少MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">1个MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">
        

MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">right? I think most 7 least 2MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

sjeffrry

1.        36 一个四边形和一个圆相交，问交点的个数？
        

答案是最多8个最少1个
        

right? I think most 7 least 2

sjeffrry

MingLiU","serif"; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt;">1.        一个医院生出来的小孩儿有MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">40%是男孩，当中有MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">10%没长到MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">3.6KG，问有多少女孩没长到MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">3.6KG？MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">DS题MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

条件一总人数超过MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">40人MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

条件二所有的孩子当中有百分之多少没长到MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

答案 E

But I think is B?

sjeffrry

1.        有一组正整数，最小18，最大60，
            问这组数是否超过15 个
                

1）中位数是54，
                

2）这组数之和大于700。
            

I got the solution is C, not E?

sjeffrry

MingLiU","serif"; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt;">1.        给出五个数的平均数MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma;">(暂时记为MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma;">average)，然后将五个数去掉中数后剩下四个数数相加（暂时记为MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma;">sum），MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma;">average=(1/3)*sum.问中数等于多少MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma;">?MingLiU","serif"; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

答案MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;"> 2/3sum

MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">

MingLiU","serif"; mso-fareast-font-family: SimSun; mso-fareast-language: ZH-CN; mso-bidi-font-family: Tahoma; mso-font-kerning: 0pt;">the median should smaller than one half of sum?

shinelily528

141.    还有个是机警里的好象说Ａ有Ｍ的钱存银行里,以m%的年利率两年制的复利Ｂ有K的,钱以x%的利率季度制的复利问一年下来,谁利息得的多？　　
            

（１）　Ｍ＞Ｋ　
            

（２）m > x 　　　JJ选Ｅ

　我选C

lazzycat_wxh

谢谢lz

lz加油！

captaincy

辛苦了~~~多谢

fayleung

THX