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In the figure $ABCD$ is a rectangle and $ACEF$ is a square.Area of the square is $625$ and perimeter of the rectangle is $62$.What is difference between two sides of rectangle?Search found 1007 matches
- Thu Mar 14, 2019 10:53 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Primary 2019#5
- Replies: 3
- Views: 9669
BdMO National Primary 2019#5
In the figure $ABCD$ is a rectangle and $ACEF$ is a square.Area of the square is $625$ and perimeter of the rectangle is $62$.What is difference between two sides of rectangle?
- Thu Mar 14, 2019 10:49 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Primary 2019#8
- Replies: 0
- Views: 40499
BdMO National Primary 2019#8
In the figure,the small and big circle have a radius of $1$ and $3$ respectively.If the small circle revolves round the big circle according to the figure left to right.What portion of the circumference of the big circle it will cover?
- Thu Mar 14, 2019 8:57 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2019/10
- Replies: 2
- Views: 8662
Re: BdMO National Higher Secondary 2019/10
Given Diagram:
If we put the warriors at $4k+1$ row,we will get the number of total knights as the question but how can we prove that this the the lowest number of warriors?- Thu Mar 14, 2019 8:48 am
- Forum: Number Theory
- Topic: Happy Pi day
- Replies: 3
- Views: 11051
Re: Happy Pi day
Happy $\pi$ day.
Also,This is the first day of Einstein
And The last day of Hawking.
We can get the number $1971$ very early @ $\pi$.
Also,This is the first day of Einstein
And The last day of Hawking.
- Wed Mar 13, 2019 10:16 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Junior 2019/6
- Replies: 4
- Views: 57861
Re: BdMO National Junior 2019/6
Diagram
Solution
- Tue Mar 12, 2019 9:18 pm
- Forum: Social Lounge
- Topic: Best of Luck :)
- Replies: 2
- Views: 15067
- Tue Mar 12, 2019 9:15 pm
- Forum: Junior Level
- Topic: IMO 1975
- Replies: 2
- Views: 10928
Re: IMO 1975
Let $f(n)$ denote the sum of the digits of $n$. (a) For any integer $n$, prove that eventually the se quence $f(n),f(f(n) ),f(f(f(n))),$ . . . will become constant. This constant value is called the digital sum of $n$. (b) Prove that the digital sum of the product of any two twin primes, other than...
- Tue Mar 12, 2019 9:09 pm
- Forum: Site Support
- Topic: New topic folder
- Replies: 1
- Views: 381330
Re: New topic folder
321382 views!!!
How it is possible?
After 13 hours:321471 views!What is the reason?
How it is possible?
After 13 hours:321471 views!What is the reason?
- Tue Mar 12, 2019 9:04 pm
- Forum: Introductions
- Topic: Combinatorics
- Replies: 4
- Views: 29034
Re: Combinatorics
I think this problem should be posted @ divisional math olympiad forum. You can get in depth solution of this problem at the book "A path to combinatorics for undergraduates " by Titu andresscu.You can easily get the pdf version of that book. Has there any Bangla book? No,not Bangla version of this...
- Mon Mar 11, 2019 11:45 pm
- Forum: Junior Level
- Topic: BDMO 2016 Regional
- Replies: 17
- Views: 107435
Re: BDMO 2016 Regional
Yes.I have said that my solution is wrong.I know that.I am not eager to prove this.When I will be intersted I will try to prove.math_hunter wrote: ↑Mon Mar 11, 2019 11:40 pmNo...no...this isn't the standard of math. You need to prove it.