Search found 61 matches
- Wed Mar 23, 2011 4:59 pm
- Forum: Number Theory
- Topic: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
- Replies: 8
- Views: 6265
Re: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
Then definitely you don't know my mistakes..
- Tue Mar 22, 2011 9:02 pm
- Forum: Number Theory
- Topic: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
- Replies: 8
- Views: 6265
Re: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
Don't worry! You are not alone. None other can beat me in carelessness..
- Tue Mar 22, 2011 3:35 pm
- Forum: Number Theory
- Topic: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
- Replies: 8
- Views: 6265
Re: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
Actually it's still not correct. $18k-4 \not= 14k$ right? and $-18k -4\not=22k$
- Tue Mar 22, 2011 1:51 pm
- Forum: Chemistry
- Topic: Best Periodic Table
- Replies: 3
- Views: 3569
Re: Best Periodic Table
Why don't you make one by yourself? That would be fun! The information you require are available in world wide web.
- Tue Mar 22, 2011 1:49 pm
- Forum: Number Theory
- Topic: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
- Replies: 8
- Views: 6265
Re: Bangladesh IMO TST 1: 2011/ NT-2 (P 1)
$p^2-4=9k(pk-2)$ = $p^2+18k-4=9pk^2$ not $p^2+14=9pk^2$ or did I miss something?Masum wrote: Then $p(p^2-4)=9pk(pk-2)\Longrightarrow p^2-4=9k(pk-2)\Longrightarrow p^2+14=9pk^2$
Then $p(p^2-4)=9pk(pk+2)\Longrightarrow p^2=9pk^2+22$
Final solution is correct though!
- Tue Mar 22, 2011 12:50 pm
- Forum: Geometry
- Topic: Simple Proof of Pythagorean Theorem using Power of a Point
- Replies: 5
- Views: 3976
- Tue Mar 22, 2011 12:40 pm
- Forum: Geometry
- Topic: Problem! Problem!
- Replies: 8
- Views: 5129
Problem! Problem!
Let $\triangle ABC$ be an acute, scalene triangle, and let $M$, $N$, and $P$ be the midpoints of $BC$, $CA$, and $AB$, respectively. Let the perpendicular bisectors of $AB$ and $AC$ intersect ray $AM$ in points $D$ and $E$ respectively, and let lines $BD$ and $CE$ intersect in point $F$, inside of t...
- Tue Mar 15, 2011 11:53 am
- Forum: Introductions
- Topic: Knowing
- Replies: 5
- Views: 4838
Re: Knowing
Welcome Nafis Tihami!
- Tue Mar 15, 2011 11:51 am
- Forum: News / Announcements
- Topic: Tarik Adnan Moon :D
- Replies: 9
- Views: 10423
Tarik Adnan Moon :D
The subject topic might take you by surprise that why the name which is tucked below every post topic in this forum showed up as the subject this time. If so, the surprise is worth it! The administrator and designer of BdMO online forum, Tarik Adnan Moon made his way to the Massachusetts Institute o...
- Wed Feb 16, 2011 1:09 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2011/4
- Replies: 7
- Views: 5995
Re: BdMO National Higher Secondary 2011/4
I have done it as Mehfuj did.