Search found 312 matches
- Thu Jan 30, 2014 12:54 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Junior 2010/5
- Replies: 3
- Views: 3701
Junior 2010/5
Find all pairs of positive integers $(m,n)$ which satisfy $m^{3}+1331=n^{3}$
- Tue Jan 28, 2014 8:24 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Junior 2010/2
- Replies: 1
- Views: 1849
Junior 2010/2
A rectangle and a square have the same area,find,with proof,which one has a greater perimeter
- Tue Jan 28, 2014 8:03 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Junior 2011/8
- Replies: 3
- Views: 3092
Re: BdMO National Junior 2011/8
Is the solution of (b) correct!
- Tue Jan 28, 2014 8:01 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Junior 2011/8
- Replies: 3
- Views: 3092
Re: BdMO National Junior 2011/8
(a)solution:suppose,'$c$' is a circle.$O$ is it's centre.Draw a chord $AB$. $D$ is the midpoint of $AB$.Join O,$D.OA$=$OB$,$AD=BD$ and $OD$ is the common side of $\triangle OAD$ and $\triangle ODB$ .So $\triangle OAD \cong \triangle ODB$. So $\angle ADO=\angle BDO=90^{\circ}$ (b)solution: $X$ is the...
- Tue Jan 28, 2014 7:38 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Junior 2011/10
- Replies: 2
- Views: 2810
Re: BdMO National Junior 2011/10
Via,please give the solution
- Tue Jan 28, 2014 7:33 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Number Set
- Replies: 2
- Views: 2450
Re: Number Set
Please post the full solution
- Tue Jan 28, 2014 6:59 pm
- Forum: Junior Level
- Topic: Geometry
- Replies: 2
- Views: 2774
Re: Geometry
Thank You.
- Tue Jan 28, 2014 6:55 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Junior 2011/9
- Replies: 3
- Views: 3592
Re: BdMO National Junior 2011/9
Please give the solution
- Mon Jan 27, 2014 8:17 pm
- Forum: Junior Level
- Topic: Geometry
- Replies: 2
- Views: 2774
Geometry
If $s,r,R$ have their usual meaning,prove that,$abc=4srR$
- Mon Jan 27, 2014 7:23 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Junior 2011/9
- Replies: 1
- Views: 1868
Junior 2011/9
p is a prime and sum of the numbers from 1 to p is divisible by all primes less or equal to p.Find the value of p with proof