Voted Questions
Nguyễn Huy Hoàng
22/08/2017 at 15:27
Dao Trong Luan 22/08/2017 at 15:31
\(A=\dfrac{1}{3}\left(\dfrac{1}{3}\dfrac{1}{6}+\dfrac{1}{6}\dfrac{1}{9}+...+\dfrac{1}{123}\dfrac{1}{126}\right)\)
\(A=\dfrac{1}{3}\left(\dfrac{1}{3}\dfrac{1}{126}\right)=\dfrac{1}{3}\cdot\dfrac{41}{126}=\dfrac{41}{378}\)
So \(A=\dfrac{41}{378}\)
Selected by MathYouLike 
Help you solve math 22/08/2017 at 15:35
We see that:
\(\dfrac{1}{3.6}\)=\(\dfrac{1}{3}\). \(\dfrac{3}{3.6}\)=\(\dfrac{1}{3}\). \(\dfrac{1}{3}\) \(\dfrac{1}{6}\)
=>A=\(\dfrac{1}{3}\). \(\dfrac{1}{3}\) \(\dfrac{1}{6}\)+ \(\dfrac{1}{6}\) \(\dfrac{1}{9}\)+...+\(\dfrac{1}{123}\) \(\dfrac{1}{126}\)
=\(\dfrac{1}{3}\). \(\dfrac{1}{3}\) \(\dfrac{1}{126}\)
=\(\dfrac{41}{378}\)
Nguyễn Huy Hoàng selected this answer.
Trần Đức Bảo
30/03/2017 at 20:06
Trần Đức Bảo 30/03/2017 at 20:18
10989


Nguyễn Đức Kiên 05/04/2017 at 19:57
Đ/S là 10989 nha bạn.
justin bieber
19/03/2017 at 12:56Phúc Hoàng
30/03/2017 at 21:49nguyenlong
14/08/2017 at 15:19
Help you solve math 14/08/2017 at 15:32
Answer:
From the first division, we formulate the relation as A= 54L+38, Where L is some integer. The second relationship gives A=18 × 14+ R with r ∈ n and $0
A=54x + 38=18 × 3x + 18 × 2 + 2=18(3x + 2)+2
Hence R=2 and A= 18 × 4 + 2= 254
Answer is: A + R=256
Good luck

Lê Quốc Trần Anh Coodinator
23/08/2017 at 18:16
VTKVangTrangKhuyet 24/08/2017 at 14:53
The last 6 more people must have you Help you solve math :))
I've search some newest users, I can't understand if a question the thread just have the order "Calculate" in hundred kind ( 250 + 100 + ... = ?) you have more than 5 ers in each question.
I've also find some new users and find out that more than 70% new users are your own accounts, cause when I click in that accounts I will find a line that "............. d an answer of a question" when I click in that question, I always find out that you're in that question.
You also for another accounts to low down the doubt that the accounts are yours.
These ways of cheating cannot pass my eyes dude :)) I've catched redhanded a lot of cheating ways that you've never think once in your life.
P/s : Just for the weekly prize but you do by cheating, the knowledge won't stay long with your brain.

Help you solve math 24/08/2017 at 08:26
Mình mong các bạn khắc các lỗi mà Lê Quốc Trần Anh đưa ra

Help you solve math 23/08/2017 at 20:55
6 người nữa là ai vậy bạn:
Lê Quốc Trần Anh Coodinator
17/03/2018 at 03:04
Fixida 17/03/2018 at 09:44
đúng rồi admin nên xóa người dùng này mãi mãi

¤« 03/04/2018 at 13:34
506mn78¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
divided by 8 with remainder 2
⇒n78¯¯¯¯¯¯¯¯
divided by 8 with remainder 2
=> n = 1 ; 3 ; 5 ; 7 ; 9
506mn78¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯⋮9⇒26+m+n⋮9
If n = 1,then27+m⋮9⇒m=0;9
If n = 3.then 29+m⋮9⇒m=7
If n = 5,then 31+m⋮9⇒m=5
If n = 7.then 33+m⋮9⇒m=3
If n = 9,then 35+m⋮9⇒m=1
Hence,(m ; n) = (0 ; 1) ; (9 ; 1) ; (7 ; 3) ; (5 ; 5) ; (3 ; 7) ; (1 ; 9)

\(\overline{506mn78}\)divided by 8 with remainder 2
\(\Rightarrow\overline{n78}\)divided by 8 with remainder 2
=> n = 1 ; 3 ; 5 ; 7 ; 9
\(\overline{506mn78}⋮9\Rightarrow26+m+n⋮9\)
If n = 1,then\(27+m⋮9\Rightarrow m=0;9\)
If n = 3.then \(29+m⋮9\Rightarrow m=7\)
If n = 5,then \(31+m⋮9\Rightarrow m=5\)
If n = 7.then \(33+m⋮9\Rightarrow m=3\)
If n = 9,then \(35+m⋮9\Rightarrow m=1\)
Hence,(m ; n) = (0 ; 1) ; (9 ; 1) ; (7 ; 3) ; (5 ; 5) ; (3 ; 7) ; (1 ; 9)
vũ hà vy anh
09/04/2017 at 10:15
Vũ Hà Vy Anh 09/04/2017 at 10:22
If all are rabbits there will be:
36x2 =72 legs
14496=48
there will be extra 48 legs
the difference in the number of legs between rabbits and chickens is 2legs
48:2=12 chickens
vũ hà vy anh selected this answer.