GRE数学考试常见题型的解题技巧有哪些呢?以下将为大家深入分析GMAT数学考试常见题型的解题策略和技巧,希望能够为考生备战GMAT数学考试带来帮助。
一些概念
独立事件:independent event A,B共同发生的概率=A发生发生的概率B发生的概率
互斥事件:mutual exclusive event A发生的概率+B发生的概率=A or B发生的概率
标准差: = 標準差
項數標準差,若各项同時增加或減少某數,例如加5,則標準差不變
項數標準差,若各项同時增加或減少某比例,例如5%,則標準差會等比增加或減少
公理:两个数的乘积=其最大公约数最小公倍数
区分概念单词:
Quadrilateral 四边形
Parallelogram 平行四边形
余数的算法
余数的计算:
1. 余数可以加减: mod q=+) mod q
2. 余数可以相乘:MN除以q的余数,就等于M除以q的余数 乘以 N除以q的余数,再求余数:MN mod q= mod q
3. N^m 除以q的余数:先求N除以9的余数,然后相乘后再求余数:
M^n mod q =^n mod q
只要我们尽量把计算中的余数凑成与1相关的乘式
等比数列
通项:An=A1q^
求和:S=A1 /
等差数列
通项:An=A1+d
求和:S=n/2
OG
OG12-81
Amount of Bacteria Present
Time Amount
1:00 P.M. 10.0 grams
4:00 P.M. x grams
7:00 P.M. 14.4 grams
81. Data for a certain biology experiment are given int he table above. If the amount of bacteria present increased by the same factor during each of the two 3-hour periods shown, how many grams of bacteria were present at 4:00 P.M. ?
12.0
12.1
12.2
12.3
12.4
OG12-106
106. When positive integer x is divided by positive integer y,the remainder is 9. If x/y= 96.12, what is the value of y ? X=96Y+0.12Y
96
75
48
25
12
OG12-73
73. If m is an integer, is m odd?
m/2 is not an even integer. 不是偶数,不一定就是奇数 可能是小数
m 3 is an even integer.
以上为大家推荐了一些GMAT数学试题的使用解题技巧,考生不妨从中借鉴,通过针对性的练习来逐步掌握GMAT数学考试的解题技巧,从而在GMAT考试中发挥出更好的水平。
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