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标题: 一堆破题...呵呵请教 [打印本页]

作者: 卧室春竹 时间: 2003-2-13 17:32 标题: 一堆破题...呵呵请教

几个破题大家看看怎么做....答案可能有些有问题....

2-height represents the greatest n of integer x as 2^n of x. Is 2-height of K > that of M?
   (1)k>m
   (2)  K/M equalt a even integer          B
已知一函数f(n)=2*4*6*。。。*n 求f(24)的最大质因子 11
已知一个数A是14的倍数，B是6的倍数，问A*B是105*K的倍数吗？
（1）K =9 (2）K^2=25 答案B

one set of numbers consists of consecutive integers, the least number is 3, how many numbers in the set.
the average(arithmetic mean) of all the numbers in the set is 6
the number of integers is equal to the range of the set

[N]为由2至N的连续偶数乘积(所有小于或等于n的正偶数连乘积)，例[10]=2X4X6X8X10，求[20]+[22]的最大质因子。选项为23/19/17/15/13/11    A

There are two set A and B which only includes positive integer. A and B have the same number of positive integers. is the median of A greater than the average of B.
the items in A are even, the items in B is odd.
the sum of A is equal to sum of B.

N是否为一个INTERGER的平方？
4N是一个INTERGER的平方。
N的三次方是一个INTERGER的平方。

M>N ?
M/N>0
(M-N)/N>(N-M)/M    E?

问(n-1)(n+1)/24 的余数r是多少？
2 is not a factor of n
3 is not a factor of n my answer C

作者: tongxun 时间: 2003-2-13 18:17

1、3>2, but 2-height of 3 and 2 exclusively: 0 and 1,
4>2, .....................................2 and 1
let K=2^x, M=2^y
K/M equalt a even integer =>k is at least equal to 2m =>x>y

作者: tongxun 时间: 2003-2-13 18:24

已知一函数f(n)=2*4*6*。。。*n 求f(24)的最大质因子 11
--------------------
在所有的因子中，为质数的有2、3、5、7、11，最大的就是11。因为22=11*2

已知一个数A是14的倍数，B是6的倍数，问A*B是105*K的倍数吗？
（1）K =9 (2）K^2=25 答案B
---------------------------
我选E。
A=14，B=6的时候就不是，但若A是14的45倍，B是6的1倍的时候，就是。
条件2）同理。
由于两个条件中K的数值不同，所以C是肯定不可以的。

作者: tongxun 时间: 2003-2-13 18:41

one set of numbers consists of consecutive integers, the least number is 3, how many numbers in the set.
the average(arithmetic mean) of all the numbers in the set is 6
the number of integers is equal to the range of the set
-------------------------
条件1）可以利用等差数列和的公式解方程，算出一唯一答案。
条件2）既然是连续的整数序列，怎么回出现这么个条件？不明白！

[N]为由2至N的连续偶数乘积(所有小于或等于n的正偶数连乘积)，例[10]=2X4X6X8X10，求[20]+[22]的最大质因子。选项为23/19/17/15/13/11 A
----------------------
[20]+[22]=[20]（1+22）=[20]*23

作者: tongxun 时间: 2003-2-13 18:49

There are two set A and B which only includes positive integer. A and B have the same number of positive integers. is the median of A greater than the average of B.
the items in A are even, the items in B is odd.
the sum of A is equal to sum of B.
---------------------------
E

N是否为一个INTERGER的平方？
4N是一个INTERGER的平方。
N的三次方是一个INTERGER的平方。
----------------
D

M>N ?
M/N>0
(M-N)/N>(N-M)/M E?
-------------------------------
E

问(n-1)(n+1)/24 的余数r是多少？
2 is not a factor of n
3 is not a factor of n my answer C
------------------------------
C

作者: joywzy 时间: 2003-2-13 19:14

N是否为一个INTERGER的平方？
4N是一个INTERGER的平方。
N的三次方是一个INTERGER的平方。
----------------
D

原文是不是缺了讲N是整数，若没有讲，应是E

能否讲讲以下两题：

There are two set A and B which only includes positive integer. A and B have the same number of positive integers. is the median of A greater than the average of B.
the items in A are even, the items in B is odd.
the sum of A is equal to sum of B.
---------------------------
E

问(n-1)(n+1)/24 的余数r是多少？
2 is not a factor of n
3 is not a factor of n my answer C
------------------------------
C

作者: 卧室春竹 时间: 2003-2-13 23:58

谢谢您的答复

M>N ?
M/N>0
(M-N)/N>(N-M)/M

感觉这个题选择C M/N说明MN同号然后条件2就可以确定MN的大小了吧？！~

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