Permutation 排列
Prirmi
key words
arrange
O No repetition
Repetition
Arranger items
from n objectives
Combination 组合
Cr
7in
Conditional probability
P AB
P
P Red
Blue
Probability
key words
select
G
黹
ii
条件概率 keywords given that
of A given B
在 已知 B 的基础上发 A
的概率
Set Bulider
integer decimal
理数
不
后后
recurring decimal1
e
Rational t irrational
at bi
logaptlogaq logapq
Logarithms
log
log
loge In
个 logap logaq loga号
logapn
nlogap
In 6 x 2
In36
log x3 log 27
X3 27
6 X 2 36
X 2 6
X
X 4
y
3h04
计算器算
In X
3
