## Search found 18 matches

Wed Dec 03, 2014 10:26 am
Forum: News / Announcements
Replies: 4
Views: 4471

I'm gonna finish my A level on January 2015. Can I register for math Olympiad this year?And can those people who finished their A level on June 2014 sit this year? Thanks!
Thu Jan 30, 2014 6:18 pm
Forum: Geometry
Topic: This is not cool actually!
Replies: 4
Views: 1939

### Re: This is not cool actually!

Naheed wrote:How did you find the value of ABC= 2X2X √3/4 ?
Area of triangle= 0.5*ab*sin x
As the triangle is equilateral all 3 angles are equal so =60
sin 60=$$\frac{\sqrt{3}}{2}$$
AC=2, so ABC=$$\frac{1}{2}$$*2*2*$$\frac{\sqrt{3}}{2}$$
Thu Jan 23, 2014 10:55 pm
Topic: Chittagong 2013 higher secondary problem 9
Replies: 5
Views: 2846

### Re: Chittagong 2013 higher secondary problem 9

Why don't you try to figure it out in the Bangla way? Just a tip, most of the times i used the bangla way during divisionals. its just a advice though, different strategy might work for you. Yah Bangla way might work but that will be very time consuming. Looking for other ways if someone have one. ..
Thu Jan 23, 2014 9:57 pm
Topic: Chittagong 2013 higher secondary problem 9
Replies: 5
Views: 2846

### Chittagong 2013 higher secondary problem 9

Batman lives in Brazil and Superman lives in Argentina. During Eid holidays, Batman will visit Argentina and Superman will visit Brazil. If they start from their respective countries at a time what is the probability that they will meet on their?
Mon Sep 09, 2013 6:30 pm
Forum: National Math Camp
Topic: [OGC1] Online Geometry Camp: Result
Replies: 2
Views: 4225

### Re: [OGC1] Online Geometry Camp: Result

Though i got a fail mark it was fun solving the problems! Hoping to see more online camps on other topics!
Thu Aug 29, 2013 11:47 am
Forum: National Math Camp
Topic: [OGC1] Online Geometry Camp: Day 5 (EXAM!)
Replies: 29
Views: 13271

### Re: [OGC1] Online Geometry Camp: Day 5 (EXAM!)

Can we use calculator for finding angles?
Wed Aug 28, 2013 4:58 pm
Forum: National Math Camp
Topic: [OGC1] Online Geometry Camp: Day 4
Replies: 32
Views: 14621

### Re: [OGC1] Online Geometry Camp: Day 4

Area of large circle is $4\pi$ Let the area of intersection between the small circles be x Area of one small circle is pi. So total area of four small circles= $$4\pi-4x$$. Let area of upper shadow part be y So $$4\pi-(4\pi-4x)=4y$$ $$4\pi-4\pi+4x=4y$$ This gives up x = y So the difference between t...
Wed Aug 28, 2013 4:23 pm
Topic: BdMO 2013 Junior Problem 10
Replies: 6
Views: 2171

### Re: BdMO 2013 Junior Problem 10

@ Fatin: Are you sure this is the actual problem from the Olympiad? Because it has infinite answers. Take another triangle $A'B'C'$ where $\triangle A'B'C'$ and $\triangle ABC$ are similar but not congruent. Take a point $O'$ inside $\triangle A'B'C'$ and do the same things as before and you have y...
Wed Aug 28, 2013 11:59 am
Topic: BdMO 2013 Junior Problem 10
Replies: 6
Views: 2171

### Re: BdMO 2013 Junior Problem 10

Tue Aug 27, 2013 10:10 am
Forum: National Math Camp
Topic: [OGC1] Online Geometry Camp: Day 2
Replies: 22
Views: 10770

### Re: [OGC1] Online Geometry Camp: Day 2

@ Ira
How did you prove this-
PQ রেখাংশ এবং AC কর্ণ পরস্পর O বিন্দুতে সমকোণে সমদিখণ্ডিত হয়।?