Search found 125 matches
- Sun Dec 19, 2010 2:12 am
- Forum: Divisional Math Olympiad
- Topic: function
- Replies: 6
- Views: 4489
Re: function
$f(2n+1)=?$..........$f(2n)=2f(n)$ r $f(2n+1)$=kichu na hoile to ans may be 1......hidden kemne korree vai??????
- Sun Dec 19, 2010 2:00 am
- Forum: Divisional Math Olympiad
- Topic: Progression of 3 and their powers
- Replies: 8
- Views: 4750
Re: Progression of 3 and their powers
1st 4ta term e ki dieche????????4tay to onek kisui hoite parree
- Sun Dec 19, 2010 1:15 am
- Forum: Divisional Math Olympiad
- Topic: A problem of Modular Arithmetic
- Replies: 9
- Views: 5758
Re: A problem of Modular Arithmetic
amar $60n-2$ ashche ken????Avik Roy wrote:The numbers are of the form $60n+1$
There's no single residue when dividing by 7, can there be?
- Sun Dec 19, 2010 1:09 am
- Forum: Higher Secondary Level
- Topic: Find the Number of PrimeNumbers
- Replies: 21
- Views: 12052
Re: Find the Number of PrimeNumbers
rakeen--welxxxxxx.maruf--jani na just guess korsii..tui r 1ta bair korte parle post kor...dekhi thikase naaki
- Sat Dec 18, 2010 12:35 pm
- Forum: Divisional Math Olympiad
- Topic: A problem of Modular Arithmetic
- Replies: 9
- Views: 5758
Re: A problem of Modular Arithmetic
$3a+1=n=4b+2 theke n1=10,22..........[10+g12]$ gpurnosongkha
$n1=5c+3 er jonno 58, 118.......{(5x-1)12+10}[n{1} hotee dhara toiri koree]$
${(5x-1)12+10} x=natural number$
eita ki thik ase????????????????
$n1=5c+3 er jonno 58, 118.......{(5x-1)12+10}[n{1} hotee dhara toiri koree]$
${(5x-1)12+10} x=natural number$
eita ki thik ase????????????????
- Sat Dec 18, 2010 11:44 am
- Forum: Divisional Math Olympiad
- Topic: Problems on Number Theory and Alzebra (frm BdMO)
- Replies: 14
- Views: 9315
Re: Problems on Number Theory and Alzebra (frm BdMO)
$2x^2-8x+7=x^2-2*4*x+4^2+x^2-9=(x-2)^2+(x+3)*(x-3)$
lowest value $(-5)$
lowest value $(-5)$
- Sat Dec 18, 2010 11:40 am
- Forum: Junior Level
- Topic: Divisible by 24
- Replies: 7
- Views: 5419
Re: Divisible by 24
just observation........Muhiminul Maruf wrote:shahriar, how did u write that odd^2 / 3 = k
- Fri Dec 17, 2010 6:30 pm
- Forum: Astronomy & Astrophysics
- Topic: গ্রহ নক্ষএ
- Replies: 25
- Views: 33045
Re: গ্রহ নক্ষএ
তানভীর ভাইয়া তো বললো।nisha wrote:কেউ গ্রহ নক্ষএ'র পার্থক্যটা ক্লিয়ার করে বলেন!
- Fri Dec 17, 2010 6:22 pm
- Forum: Divisional Math Olympiad
- Topic: Problems on Number Theory and Alzebra (frm BdMO)
- Replies: 14
- Views: 9315
Re: Problems on Number Theory and Alzebra (frm BdMO)
1. try to make a square and use the idea that the square of a real number is always $\geq 0$. 2. Already replied. But from next time please don't double post. 3. yes, correct! 4. I don't understand your problem 4. Have you written it correctly? 5. $\dfrac{2003\times (2003+1)}{2} = 2 007 006$. Does ...
- Fri Dec 17, 2010 6:06 pm
- Forum: Divisional Math Olympiad
- Topic: Problems on Number Theory and Alzebra (frm BdMO)
- Replies: 14
- Views: 9315
Re: Problems on Number Theory and Alzebra (frm BdMO)
7no::
$3a+1=n=4b+2,theke n{1}=10,22,...........................[10+g12]..{g purnosongkha}$
$n{1}=5c+3$ er jonno 58,118.......{(5x-1)12+10}[n{1} hotee dhara toiri koree]$
${(5x-1)12+10}$ $x=natural number$
eita ki thik ase????????????????
$3a+1=n=4b+2,theke n{1}=10,22,...........................[10+g12]..{g purnosongkha}$
$n{1}=5c+3$ er jonno 58,118.......{(5x-1)12+10}[n{1} hotee dhara toiri koree]$
${(5x-1)12+10}$ $x=natural number$
eita ki thik ase????????????????