gmat数学精解之算术的总结
整数：integer，whole number 因子：factor or divisor
If x and y are integers and x0,x is a divisor of y provided that y=xn for some integer n. In this case y is also said to be divisible by x or to be a multiple of x. For example, 7 is a divisor or factor of 28 since 28=74, but 8 is not a divisor of 28 since there is no integer n such that 28=8n.Divisible adj.可以被整除的 multiple n.倍数
2.商和余数：quotients and remainders
余数和商都可以为0
3.奇数和偶数：odd and even integers
奇数和偶数都可以是负数;零一定是偶数
4.质数和合数：prime numbers and composite numbers
A prime number is a positive integer that has exactly two different positive divisors，1 and itself. For example, 2,3,5,7,11, and 13 are prime numbers, but 15 is not, since 15 has four different positive divisors, 1, 3, 5, and 15. The number 1 is not a prime number, since it has only one positive divisor. Every integer greater than 1 is either prime or can be uniquely expressed as a product of prime factors. For example, 14= , 81= , and 484= .
【gmat数学精解之算术的总结】相关文章：
巧解GMAT数学求余数问题08-29
GMAT算术知识点解答08-11
GRE考试数学考题算术的总结09-12
GMAT数学的难点总结07-29
GMAT数学满分技巧之把握细节10-11
GMAT的数学词汇独家总结09-12
GMAT数学难点的分析总结09-06
gmat数学所涉理论的总结08-16
GMAT数学词汇整理总结09-09