Search found 1007 matches
- Tue Feb 13, 2018 11:45 pm
- Forum: Primary Level
- Topic: Books and Websites for primary category preparation
- Replies: 2
- Views: 12518
Re: Books and Websites for primary category preparation
Mathematical Olympiad for children http://www.math-exercises-for-kids.com/. I think it will be helpful.
- Tue Feb 13, 2018 11:40 pm
- Forum: Introductions
- Topic: My Introduction
- Replies: 1
- Views: 7936
My Introduction
I am $Md.Samiul Karim Khan$.My nick name is Samin.I am a student of class eleven .I read in Ananda Mohan College.I love solving mathematical problem and want to learn many techniques of problem solving from this forum.
- Tue Feb 13, 2018 11:31 pm
- Forum: Number Theory
- Topic: Euler's Criterion
- Replies: 3
- Views: 58587
Re: Euler's Criterion
What is the value of A?
- Tue Feb 13, 2018 11:30 pm
- Forum: Junior Level
- Topic: permutation
- Replies: 1
- Views: 5450
Re: permutation
It is just an easy algebric manipulation. because $(n-r)!=n*(n-1)*(n-2)*...2*1$ so the numerator will be$n!$. And we are done.☺☺☺
- Tue Feb 13, 2018 11:25 pm
- Forum: Social Lounge
- Topic: Chat thread
- Replies: 53
- Views: 85466
Re: Chat thread
Why we are not opening a thread like 'BDMO National preparation 2018'?If any senior one open this thread we will be able to help each other.
- Tue Feb 13, 2018 11:21 pm
- Forum: Social Lounge
- Topic: জিজ্ঞাসা
- Replies: 6
- Views: 6757
Re: জিজ্ঞাসা
' বিদ্যাকৌশল' লেখক:রাগিব হাসান বইটা পড়লে মনে হয় কাজে লাগবে।
- Tue Feb 13, 2018 10:08 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Dhaka Regional 2017
- Replies: 2
- Views: 8396
Re: Dhaka Regional 2017
I am sorry.How can I take this to the Divisional Math Olympiad?samiul_samin wrote: ↑Tue Feb 13, 2018 8:48 pmPrimary No.8
$ABC$ is an isosceles triangle where $AB=AC$ and $<A=100 degree$.$D$ is a point on $AB$ such that $CD$ bicects$<ACB$ internally.If $BC=2018$ then $AD+CD=?$.
- Tue Feb 13, 2018 9:45 pm
- Forum: Teachers' and Parents' Forum
- Topic: Need some help.
- Replies: 7
- Views: 43120
Re: Need some help.
He can take part in Math Olympiad 2019 by completing registration.Join the facebook page Of BdMOC to get the news update of registration.You will get it near December.
- Tue Feb 13, 2018 8:48 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Dhaka Regional 2017
- Replies: 2
- Views: 8396
Dhaka Regional 2017
Primary No.8
$ABC$ is an isosceles triangle where $AB=AC$ and $<A=100 degree$.$D$ is a point on $AB$ such that $CD$ bicects$<ACB$ internally.If $BC=2018$ then $AD+CD=?$.
$ABC$ is an isosceles triangle where $AB=AC$ and $<A=100 degree$.$D$ is a point on $AB$ such that $CD$ bicects$<ACB$ internally.If $BC=2018$ then $AD+CD=?$.
- Tue Feb 13, 2018 8:32 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO 2017 National Round Secondary 7
- Replies: 17
- Views: 26658
Re: BdMO 2017 National Round Secondary 7
If I can show an example by setting $k=2$then the lowest value of $k$ is 2.But,is it enogh to show just one example to get the full solution?