Yes.
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- Sun Mar 10, 2019 4:25 pm
- Forum: Divisional Math Olympiad
- Topic: Mymensingh higher secondary 2019#1
- Replies: 3
- Views: 11299
- Sun Mar 10, 2019 4:23 pm
- Forum: Site Support
- Topic: Finding BdMO National Problems
- Replies: 0
- Views: 49026
Finding BdMO National Problems
Many problem solvers come to this forum for getting prepared for BdMO National.Solving previous problems is very helpful for them.Here is a list of previous BdMO National Problems.More problemsets will be added later.
- Sun Mar 10, 2019 4:19 pm
- Forum: News / Announcements
- Topic: Attention: BdMO resource section: New Project
- Replies: 16
- Views: 39129
Re: Attention: BdMO resource section: New Project
I have done the work of contest collection here.
- Sun Mar 10, 2019 4:06 pm
- Forum: Divisional Math Olympiad
- Topic: Mymensingh higher secondary 2019#1
- Replies: 3
- Views: 11299
Re: Mymensingh higher secondary 2019#1
Answer
$\fbox {2021}$
$Sol^n$
\[2^{2017}\times 5^{2018}\times7^3\]
\[=10^{2017}\times 5\times 343\]
\[=10^{2017}\times 1715\]
\[=1715\underbrace{000\cdots 0}_{2017}\]
So total digit$=2017+4=\fbox {2021}$
$\fbox {2021}$
$Sol^n$
\[2^{2017}\times 5^{2018}\times7^3\]
\[=10^{2017}\times 5\times 343\]
\[=10^{2017}\times 1715\]
\[=1715\underbrace{000\cdots 0}_{2017}\]
So total digit$=2017+4=\fbox {2021}$
- Sun Mar 10, 2019 3:58 pm
- Forum: Divisional Math Olympiad
- Topic: Mymensingh higher secondary 2019 #3
- Replies: 1
- Views: 9770
Re: Mymensingh higher secondary 2019 #3
Area of the shaded region$=144-49-25=70$
- Sun Mar 10, 2019 3:49 pm
- Forum: Combinatorics
- Topic: বিয়ে
- Replies: 6
- Views: 15286
Re: বিয়ে
What is mathoscope?
- Sun Mar 10, 2019 3:46 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Junior 2011/7
- Replies: 2
- Views: 8182
Re: Junior 2011/7
Posted here.samiul_samin wrote: ↑Wed Feb 14, 2018 9:07 pmThis problem has already discussed and solved in this forum.
Lock the topic please.
- Sun Mar 10, 2019 3:40 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Dhaka Regional 2017
- Replies: 2
- Views: 8209
Re: Dhaka Regional 2017
Primary P$8$
$\triangle ABC$ is an isosceles triangle where $AB=AC$ and $\angle A=100^{\circ}$.
$D$ is a point on $AB$ such that $CD$ bicects$\angle{ACB}$ internally.
If $BC=2018$ then $AD+CD=?$.
$\triangle ABC$ is an isosceles triangle where $AB=AC$ and $\angle A=100^{\circ}$.
$D$ is a point on $AB$ such that $CD$ bicects$\angle{ACB}$ internally.
If $BC=2018$ then $AD+CD=?$.
- Sun Mar 10, 2019 3:38 pm
- Forum: Combinatorics
- Topic: Could someone give me an easier IMO 6 ?
- Replies: 13
- Views: 19608
Re: Could someone give me an easier IMO 6 ?
Actually IMO $1988$ $P6$ is one of the most hardest problems of IMO .I had seen a wrong solution in a bangla book and thought that it is easy.
- Sun Mar 10, 2019 3:33 pm
- Forum: Junior Level
- Topic: BDMO 2019 : National : Junior : Pblm 05
- Replies: 9
- Views: 20872
Re: BDMO 2019 : National : Junior : Pblm 05
samiul_samin So I assume it's basically this: we first remove all squares and cubes, and then add up the double-removed 6th powers Did I get the air of the solution? Exactly this is the solution style. @samiul_samin (How do I tag you or other users?) Go to user control panel Then, friends and foe S...