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Re: Beginner's Marathon

Nevermind......
by Thamim Zahin
Thu Mar 30, 2017 12:56 am
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: Beginner's Marathon

$\text{Solution to Problem 7}$ Name all number $a_1,a_2 \cdots a_{2000}$. Where a_i is neighbour to $a_{i-1}$ and $a_{i+1}$. Lets thing all of them aren't equal. In that case we will have $a_i \not = a_{i+2}$. WLOG, take $a_i>a_{i+2}$. (There is a other case where all $a_{2j}$ and all $a_{2j+1}$ are...
by Thamim Zahin
Thu Mar 30, 2017 12:33 am
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: Beginner's Marathon

I am seeing P7, but nobody solved P6. And one more thing, does everyone hate Number Theory or Algebra? I am not seeing any of this. And i am asking @Zawadx, can i post ineq and FE?
by Thamim Zahin
Wed Mar 29, 2017 11:24 am
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: Beginner's Marathon

Let we are having 3 points, A1, A2, A3. The broken line would be (A1)(A2)(A3). Since there are 2 lines with common vertex A2, so intersection phenomenon is impossible. But if we have 4 points & create a crossed(*) quadrilateral, there would be an intersection between 2 opposite sides of the qua...
by Thamim Zahin
Tue Mar 28, 2017 11:05 pm
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: BDMO Forum Mafia #1

VOTE: thamimzahin. So that i can die quickly.
by Thamim Zahin
Tue Mar 28, 2017 10:55 pm
 
Forum: Social Lounge
Topic: BDMO Forum Mafia #1
Replies: 24
Views: 433

Re: The Gonit IshChool Project - Beta

Name you'd like to be called: Zahin
Course you want to learn: Functional Equation, Number Theory
Preferred methods of communication (Forum, Messenger, Telegram, etc.): Telegram
Do you want to take lessons through PMs or Public?: PMs
by Thamim Zahin
Tue Mar 28, 2017 5:51 pm
 
Forum: National Math Camp
Topic: The Gonit IshChool Project - Beta
Replies: 15
Views: 136

Re: Beginner's Marathon

$\text {Problem 5}$

Suppose there are $n$ points in a plane no three of which are collinear with the property that if we label these points as $A_1, A_2, . . . , A_n$ in any way whatsoever, the broken line $A_1A_2 . . . A_n$ does not intersect itself. Find the maximum value of $n$.
by Thamim Zahin
Tue Mar 28, 2017 12:23 am
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: Beginner's Marathon

$\text{Solution 4}$ Case 1: $P$, on $\widehat{AB}$. that doesn't contain $C$. Proof: $\angle ACB=\angle DHB=\angle DFB=\angle AFQ=a$ and,$\angle ACB=\angle QPA=a$ so, $AQPF$ is cyclc. and,$\angle ACB=\angle AFE=\angle PFB=a$ we know that $AQPF$ is cyclic. so, $\angle PFB=\angle AQP=a$ so, $\angle AQ...
by Thamim Zahin
Tue Mar 28, 2017 12:15 am
 
Forum: Junior Level
Topic: Beginner's Marathon
Replies: 22
Views: 380

Re: BDMO Forum Mafia #1

1. dshasan
2. ahmedittihad
3. Epshita32
4. Atony Roy Chowdhury
5. Raiyan Jamil
6. rah4927
7. nahin munkar
8. Thamim Zahin
by Thamim Zahin
Mon Mar 27, 2017 8:29 pm
 
Forum: Social Lounge
Topic: BDMO Forum Mafia #1
Replies: 24
Views: 433

Re: BDMO Forum Mafia

I am in. (Gonna kill Rahul bhai first).
by Thamim Zahin
Fri Mar 24, 2017 10:20 pm
 
Forum: Social Lounge
Topic: BDMO Forum Mafia
Replies: 5
Views: 107
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