Everybody call me Gomuj. You can call me that. ^_^

## Search found 11 matches

- Wed May 23, 2018 10:07 pm
- Forum: Social Lounge
- Topic: Chat thread
- Replies:
**53** - Views:
**6434**

### Re: Chat thread

- Mon May 21, 2018 9:30 pm
- Forum: National Math Camp
- Topic: The Gonit IshChool Project - Beta
- Replies:
**28** - Views:
**3318**

### Re: The Gonit IshChool Project - Beta

Name you'd like to be called: Gomuj

Course you want to learn:Functional Equation

Preferred methods of communication (Forum, Messenger, Telegram, etc.): Telegram, Forum

Do you want to take lessons through PMs or Public?: public

Course you want to learn:Functional Equation

Preferred methods of communication (Forum, Messenger, Telegram, etc.): Telegram, Forum

Do you want to take lessons through PMs or Public?: public

- Sun May 20, 2018 9:13 am
- Forum: Social Lounge
- Topic: Chat thread
- Replies:
**53** - Views:
**6434**

### Re: Chat thread

Hi everyone. I am MD Golam Musabbir Joy, from Barisal.

- Sat May 19, 2018 8:33 pm
- Forum: Combinatorics
- Topic: Football and Combi
- Replies:
**3** - Views:
**557**

### Re: Football and Combi

Let the weights of the peoples are $a_1,a_2, \dots a_{23} $ and $\sum a_i = S$. It is clear that $S - a_i$ is always even. So that $S $ and all $a_i $ nust have the same parity. It is also clear that if $a_i $ is a solution then $a_i + 1$ is also a solution. Let $b_1, b_2, \dots , b_{23} $ be one of...

- Sat May 19, 2018 8:04 pm
- Forum: Combinatorics
- Topic: need the solution
- Replies:
**5** - Views:
**1053**

### Re: need the solution

We can solve this problem in this way too. We will count in how many ways x can miss $100$ marks out of $300$. let $p$ be the missed marks in physics, $c$ be the missed marks in chemistry and $m$ be the missed marks in mathematics. so we have to find in how many ways $p+c+m=100$ can be possible wher...

- Mon Aug 08, 2016 2:29 am
- Forum: Geometry
- Topic: Clash of orthogonal circle
- Replies:
**1** - Views:
**448**

### Clash of orthogonal circle

$ABC$ triangle, $W_a$ is a circle with center on $BC$ passing through $A$ and orthogonal to circumcircle of $ABC$ . $W_b$ , $W_c$ are defined similarly. prove that center of $W_a$ , $W_b$ , $W_c$ are collinear.

- Mon Aug 08, 2016 12:45 am
- Forum: Higher Secondary Level
- Topic: A problem of combinatorics
- Replies:
**9** - Views:
**2019**

### Re: A problem of combinatorics

The actual solution to this problem is like this- 1 can shook hands with a max. of 35 people. Then 2 can shook hands with a max. of 34 people (this is the total handshake made including the handshake with the 1st person). Then 3 with max. 33, 4 with 32, 5 with 31, 6 with 30, 7 with 29 and 8 with 30...

- Mon Aug 08, 2016 12:19 am
- Forum: Combinatorics
- Topic: even odd even odd
- Replies:
**7** - Views:
**1279**

### Re: even odd even odd

Can any row or column be empty?

- Tue May 24, 2016 7:05 am
- Forum: International Mathematical Olympiad (IMO)
- Topic: IMO 1970
- Replies:
**2** - Views:
**906**

### Re: IMO 1970

By contradiction we assume that there exist a n such that that satisfy this proposition. there is a number in those there must be a number which is divisible by 5. so that , we have another number which is divisible by 5. suppose those number are n , n+5 . now n+1, n+2, n+3, n+4 none of them will no...

- Wed Sep 23, 2015 7:27 pm
- Forum: Combinatorics
- Topic: Two problems of circular permutations
- Replies:
**2** - Views:
**752**

### Re: Two problems of circular permutations

not sure the ans is 9!