Search found 461 matches

by sourav das
Wed Dec 26, 2012 9:10 pm
Forum: Physics
Topic: Experiment of Galileo
Replies: 16
Views: 2524

Re: Experiment of Galileo

বায়ুশুন্য স্থানে ছেড়ে দেখুন কি হয়। আসা করি তখন সঠিক ফলাফল পাবেন। আসলে বায়ুর চাপের জন্যই আপনার পরীক্ষায় সমস্যা দেখা দিছে।
by sourav das
Fri Dec 14, 2012 6:51 pm
Forum: Site Support
Topic: Bangla font
Replies: 2
Views: 1545

Bangla font

For re-installing windows, all of my bangla fonts has puzzled. So what can i do ?
by sourav das
Wed Dec 12, 2012 11:33 pm
Forum: Introductions
Topic: hi everyone
Replies: 2
Views: 942

Re: hi everyone

Hi I'm Rahi. I've been participating in BdMO since 2006. It has been really a great experience. I hope joining forum will help me to be introduced with many mathematicians and learn more maths so that I can improve myself and gain much more achievements in Mathematical Olympiad. Here I hope everyon...
by sourav das
Mon Nov 12, 2012 9:39 pm
Forum: International Mathematical Olympiad (IMO)
Topic: IMO Marathon
Replies: 184
Views: 23750

Re: IMO Marathon

Sorry for being late. Today was chemistry 2nd part exam.So I was busy.(তারপরও *** খাইসি) Finally, I've found my own solution of problem 4: Let $BT,CT$ intersect $\omega$ at $F,G$. Since the homothety from $T$ sends $F,G$ to $B,C$; So, $FG||BC$ and so $\frac{TF}{TB}=\frac{TG}{TC}$ Note that $MT$ is t...
by sourav das
Sat Nov 10, 2012 9:40 pm
Forum: International Mathematical Olympiad (IMO)
Topic: IMO Marathon
Replies: 184
Views: 23750

Re: IMO Marathon

Come on guys, IMO standard problems won't be easy to crack (Doesn't mean ugly). They'll be smart and hidden. So please post a new one. Why don't you post one ;) A samrt one ? A good one (I assume): IberoAmerican 2012: Problem 3: Let $ABC$ be a triangle, $P$ and $Q$ the intersections of the parallel...
by sourav das
Sat Nov 10, 2012 9:21 pm
Forum: International Mathematical Olympiad (IMO)
Topic: IMO Marathon
Replies: 184
Views: 23750

Re: IMO Marathon

Come on guys, IMO standard problems won't be easy to crack (Doesn't mean ugly). They'll be smart and hidden. So please post a new one.
by sourav das
Sat Nov 10, 2012 9:10 pm
Forum: International Mathematical Olympiad (IMO)
Topic: IMO Marathon
Replies: 184
Views: 23750

Re: IMO Marathon

For problem 1; Note that condition 2 implies those two circles are orthogonal. And 1st condition can be found for any $l$ for such two circles. So problem is certainly not true.
by sourav das
Wed Nov 07, 2012 9:17 pm
Forum: International Olympiad in Informatics (IOI)
Topic: Regional Informatics
Replies: 7
Views: 1939

Re: Regional Informatics

If anyone can share any previous year's question we'll be grateful. I personally want to start programming seriously.
by sourav das
Wed Nov 07, 2012 9:14 pm
Forum: News / Announcements
Topic: Active users for marathon
Replies: 23
Views: 3614

Re: Active users for marathon

7 active users . Is there anyone else? My test exam has started but still I'm trying to arrange this. So let's take it seriously.
by sourav das
Mon Nov 05, 2012 7:32 pm
Forum: News / Announcements
Topic: Active users for marathon
Replies: 23
Views: 3614

Re: Active users for marathon

Also possible if everyone agrees. I can try to arrange it. But it depends on the number of participants.