Search found 135 matches
- Fri Feb 04, 2011 5:58 pm
- Forum: Social Lounge
- Topic: suggestion please...
- Replies: 6
- Views: 4400
- Wed Feb 02, 2011 4:19 pm
- Forum: Combinatorics
- Topic: Moon vai iz gonna to hack my acount :x :x
- Replies: 11
- Views: 8950
Re: Moon vai iz gonna to hack my acount :x :x
আমি আসলে জানতে চাচ্ছিলাম আমার পদ্ধতি/যুক্তিটা ঠিক আছে কিনা...
hasib thought that you did it in that way...hasib.mo wrote:... we cant add $\frac{1}{10^{10}}+\frac{1}{10^{10}}+\frac{1}{10^{10}}.......$
- Wed Feb 02, 2011 1:20 pm
- Forum: Combinatorics
- Topic: Moon vai iz gonna to hack my acount :x :x
- Replies: 11
- Views: 8950
Re: Moon vai iz gonna to hack my acount :x :x
probability of hacking account = probability of first time + second time+ ... + $25^{th}$ time probability of success in first time = $\frac{1}{10^{10}}$ probability of success in second time =probability of not being succeeded in first time $\times$ probability of success in second time =$\frac{10^...
- Tue Feb 01, 2011 9:47 am
- Forum: International Olympiad in Informatics (IOI)
- Topic: National Informatics Olympiad 2011
- Replies: 21
- Views: 17800
Re: National Informatics Olympiad 2011
it would be the best if this can be declared in BdMO...
@hasib, yeah...
@hasib, yeah...
- Mon Jan 31, 2011 4:42 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/2
- Replies: 10
- Views: 16569
Re: Dhaka Higher Secondary 2011/2
wah! that's great! i had tried only 2 of dhaka h.s. problems, both are wrong!
- Sun Jan 30, 2011 10:18 am
- Forum: National Math Olympiad (BdMO)
- Topic: Prove
- Replies: 2
- Views: 3435
Re: Prove
$n^5-n=n(n^4-1)=n(n^2+1)(n^2-1)$ last digit of a square can be only 1, 4, 9, 6, 5 or 0... if it's 1, 4, 9, or 6, then $(n^2+1)$ or $(n^2-1)$ is obviously divisible by 5... if it's 5 or 0, then $n$ should be divisible by $5$... :D if you put 2 dollar sign in both side of (n^5-n), it would be like th...
- Sun Jan 30, 2011 10:00 am
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/4
- Replies: 8
- Views: 13112
Re: Dhaka Higher Secondary 2011/4
sorry...
- Sun Jan 30, 2011 9:56 am
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/2
- Replies: 10
- Views: 16569
- Sat Jan 29, 2011 1:59 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/4
- Replies: 8
- Views: 13112
- Wed Jan 26, 2011 5:00 pm
- Forum: International Olympiad in Informatics (IOI)
- Topic: National & Divisional Informatics Olympiad 2011
- Replies: 2
- Views: 3111
National & Divisional Informatics Olympiad 2011
Divisional Informatics Olympiad 2011 will start very soon. The date and place of each division will be informed here . Everybody who is interested in programming and eligible for participating in IOI(if you have given HSC in 2010 then you are obviously eligible) should participate in the Olympiad. T...