一道SAT数学题If a,b,and c are different positive integers such th

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/06/23 14:12:26

一道SAT数学题
If a,b,and c are different positive integers such that a is divisible by b,and b is divisible by c,which of the following statements must be true?
1.a is divisible by c.
2,a has at least 3 positive focators
3.a=bc
我就想问下第二个,是不是一个数的约数（或叫因数,factor)是包括这个数本身和1,那也就是说一个数至少有2个约数,另外,约数总是偶数个,（高中后小学有的概念就记不清了,晕.没想到SAT里能考到）

约数不一定是偶数个,比如9,它的约数是1,3,9
约数是所有能整除这个数的正整数,当然包括1和它本身.

if a,b,and c are distinct positive odd integers less than 6, sat的2道数学题!1.If j k and n are consecutive integers such that If s and t are positive integers such that s/t=64.12 ,which If a and b are positive integers and (a^1/2 * b^1/3)^6=432,w 这道数学题怎么做啊If the sum of three different positive integers a, 以下是我做的几道题1.Given a,b,c are positive integers,and a,b are pri The number of triples (a,b,c) of positive integers such that If x and y are positive integers such that x=8y+12,what is t GRE数学：If r and s are positive integers,each greater than 1,a 一道sat数学题how many integers greater than 20 and less than 30 a GMAT If x and y are positive integers,and x^3*y^4=2000.What 英语翻译Let x,y,and z be positive integers such that y is a mult