Search found 665 matches
- Mon Jan 03, 2011 10:19 am
- Forum: National Math Olympiad (BdMO)
- Topic: suggestions 4 every1
- Replies: 1
- Views: 2849
suggestions 4 every1
this post is for only those who want suggestions 8-) একটু লক্ষ্য করলে েদখেবন যে প্রতিনার গনিত উৎসবে সেই বছরের সংখহা ব্যবহার করা হয়, তাই এবার সবাই 2011 দিয়ে আঙ্ক চর্চা করে যাবেন for primary category:the product of two integers is 2011.find their sum. junior:$$20^{2011}+11^{2011}=x^{2011}$$ find all...
- Mon Jan 03, 2011 9:57 am
- Forum: Higher Secondary Level
- Topic: Prime or Composite? With proof
- Replies: 4
- Views: 3863
Re: Prime or Composite? With proof
actually i was the first one to prove it and sakal roy generalized it
- Sun Jan 02, 2011 12:48 pm
- Forum: Number Theory
- Topic: What is the 26th digit?
- Replies: 4
- Views: 3329
Re: What is the 26th digit?
notice that 111111 is divisible by 13.so111111....111111(24) is div by 13
and then 111111....1111(24)XY11111....1111(24)is div by 13[X and Y r the 25th n 26th digits]
here X=1 ,so the only choice for Y to b div by 13 is 3.
(someone help me to hide this)
and then 111111....1111(24)XY11111....1111(24)is div by 13[X and Y r the 25th n 26th digits]
here X=1 ,so the only choice for Y to b div by 13 is 3.
(someone help me to hide this)
- Sun Jan 02, 2011 12:42 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2010/2 (Secondary 2010/9)
- Replies: 17
- Views: 23505
Re: Find the area??!!
@moon vai,i used ceva and the law u showed 2 make a quadratic eq, that's y i meant"some propoetions".
will u consider that a shortcut??????????????
will u consider that a shortcut??????????????
- Sat Jan 01, 2011 5:30 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2010/2 (Secondary 2010/9)
- Replies: 17
- Views: 23505
Re: Find the area??!!
my ans is 315.
@labib bhai ,i know ceva's thm.
i used the thm and some proportions to make a quadratic equation ::mrgreen::
@labib bhai ,i know ceva's thm.
i used the thm and some proportions to make a quadratic equation ::mrgreen::
- Fri Dec 31, 2010 7:00 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2010/2 (Secondary 2010/9)
- Replies: 17
- Views: 23505
Re: Find the area??!!
it may b a silly question but r the cevian's perpendicular the the sides? ![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
- Thu Dec 30, 2010 8:23 pm
- Forum: Divisional Math Olympiad
- Topic: Problems from dhk div 2010!!
- Replies: 9
- Views: 6966
Re: Problems from dhk div 2010!!
for the small x,the value of $$x=0 $$ and $$S_n(x)=0$$
that's all i can say
that's all i can say
- Tue Dec 28, 2010 6:37 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2010/6
- Replies: 15
- Views: 11395
Re: dhaka div 2010
my ans is also 3!!!!!!!!! ![Shocked :shock:](./images/smilies/icon_eek.gif)
![Shocked :shock:](./images/smilies/icon_eek.gif)
- Thu Dec 23, 2010 6:46 pm
- Forum: Primary Level
- Topic: Any Primary Category student?
- Replies: 5
- Views: 12331
Re: plz don't ban me
I just wanted to know whether there is any primary level members or not.
if there isn't,why make a level where nobody posts(or have the ability to solve the questions)
I'm just as curious as you.![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
I made the title a little catchy so that many members would opine here.
if there isn't,why make a level where nobody posts(or have the ability to solve the questions)
I'm just as curious as you.
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
I made the title a little catchy so that many members would opine here.
- Thu Dec 23, 2010 5:49 pm
- Forum: Primary Level
- Topic: Any Primary Category student?
- Replies: 5
- Views: 12331
Any Primary Category student?
Is there any primary level student in this forum?
(if i don't get a reply within 1 day,i'll remove it)![Crying or Very Sad :cry:](./images/smilies/icon_cry.gif)
![Confused :?](./images/smilies/icon_e_confused.gif)
(if i don't get a reply within 1 day,i'll remove it)
![Crying or Very Sad :cry:](./images/smilies/icon_cry.gif)