close
1.
Bill 32
Mary31
John 38
Gene 43
Craig 53
A:43(gene)
B:38(john)
John is younger than Gene
(A)
2.
2r*pi=10
Area=25/pi
3.
1x2 =>1
4.
1<a<b<c
倒數2 3 4是最大值
假設3 4 5 =>47/60
假設 2 3 4 =>0.5+7/12
A:(a+b+c)/abc
B:1
a=3,b=4,c=5
(20+15+12)/60
(200+150+6)/600
5.
A7=a5+a6
A6=a4+a5
A5=a3+a4
…….
A3=a1+a2
=>
A1+a2+a2+a3+a3+a4+a4+a5+a5+a6>28
6.
x>0
(1/x^2)-(1/x^3)=(x-1)/(x^3)
X=1
A=0
X=2
A=1/8
7.
1/n=8*n^2
1/8=n^3
N=1/2
8.
13~15
15.07~13.066
9.
((S+2600)/s)*d
10.
8b^2
11.
n/4=?......2(1)
n/10=?......6
- => 42 [46] 50 54 58 62 [66]
- 和10最小公倍數20
Pair 4,24,44,54,74,9
less than 分母為前面 greater than 分母為後面
- Expansion =>70
- R =>210
250 =>both of E and R
430-250 => 180 one of E
290-250 => 40 one of R
112=>one of E
280=>one of R
192=>one of P
- 全部包進去 120
Original purchase prices =>x
- 度=>2sqrt(3)
- 度=>6
6t=2tk =>k=3
- 不等於average
Sum n^2
全站熱搜