Search found 829 matches
- Thu Feb 05, 2015 9:51 pm
- Forum: Secondary Level
- Topic: Practice Problem Set for National (Secondary Category)
- Replies: 2
- Views: 5257
Practice Problem Set for National (Secondary Category)
I am posting here a practice problem set for Secondary level students. Happy practising
- Thu Feb 05, 2015 9:39 pm
- Forum: Junior Level
- Topic: Practice Problem Set for National (Junior Category)
- Replies: 0
- Views: 4450
Practice Problem Set for National (Junior Category)
I am posting here a practice problem set for junior level students. Happy practicing
- Sun Feb 10, 2013 6:09 pm
- Forum: Social Lounge
- Topic: বইমেলায় গণিত অলিম্পিয়াড
- Replies: 8
- Views: 10750
Re: বইমেলায় গণিত অলিম্পিয়াড
Don't know about Math Foundation. But, this time there is no stall named "গনিতের বই"
- Thu Feb 07, 2013 11:21 pm
- Forum: Secondary Level
- Topic: Number theory
- Replies: 1
- Views: 4117
Re: Number theory
When $k$ divides $a$ and $a+1$ then, $k$ divides $a+1-a=1$
so, $k=1$
so, $k=1$
- Thu Feb 07, 2013 10:45 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2007/7
- Replies: 6
- Views: 7746
Re: BdMO National Higher Secondary 2007/7
here, $x^7-1=f(x)\cdot(x-1)$ so, \[f(x)|(x^{42}-1),(x^{35}-1),(x^{28}-1),(x^{21}-1),(x^{14}-1),(x^7-1)\] so, the remainder will be \[7\] How does the green line lead to the red line? :? :? :?: :?: actually, what I didn't think much important to mention was this \[f(x)|x^{7}-1|x^{7n}-1\] It should b...
- Thu Feb 07, 2013 10:37 pm
- Forum: National Math Olympiad (BdMO)
- Topic: Let us help one another preparing for BdMO national 2013
- Replies: 12
- Views: 13545
Re: Let us help one another preparing for BdMO national 2013
where is the $x$ ??Shadmanmajid wrote:Problem no.3- For a positive integer n, find the number of solutions of the congruence x
2 ≡ 1 (mod n).
- Tue Feb 05, 2013 6:54 pm
- Forum: Secondary Level
- Topic: Geometric Calculation
- Replies: 3
- Views: 6255
Re: Geometric Calculation
Li is a chinese unit
but, what is "in 2 Li" ?
but, what is "in 2 Li" ?
- Tue Feb 05, 2013 2:12 pm
- Forum: Secondary Level
- Topic: Geometric Calculation
- Replies: 3
- Views: 6255
Re: Geometric Calculation
When visiting a rectangular plantation, the foreman told you that they recently put up 28 Li of fencing around the entire plantation. Having spent hours walking the width of the plantation, you know that it is 3 Li long. What is the area ( in 2 Li ) of the plantation? I believe it is copied from an...
- Tue Feb 05, 2013 2:05 pm
- Forum: Secondary Level
- Topic: Combinatorics
- Replies: 5
- Views: 7302
Re: Combinatorics
yes. You are right. So, is mahi.Fahim Shahriar wrote: It's $7$. For $n$ distinguishable fair coins, $(n+1)$ outcomes.
now, someone edit that 'in'.
- Sun Feb 03, 2013 11:14 am
- Forum: Secondary Level
- Topic: Combinatorics
- Replies: 5
- Views: 7302
Re: Combinatorics
As they are indistinguishable, it should be $6.$