Search found 181 matches

by ahmedittihad
Mon Apr 30, 2018 2:39 am
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 1
Replies: 19
Views: 2851

Re: BDMO 2017 National round Secondary 1

And I'm better than you.
by ahmedittihad
Mon Apr 30, 2018 2:38 am
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 1
Replies: 19
Views: 2851

Re: BDMO 2017 National round Secondary 1

SMMamun math pare na chi chi chi
by ahmedittihad
Mon Apr 23, 2018 12:39 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 1
Replies: 19
Views: 2851

Re: BDMO 2017 National round Secondary 1

Yah well knock me on facebook if you want. I'll explain in detail. Sorry, I can't write an in detailed post about what you're doing wrong.
by ahmedittihad
Mon Mar 12, 2018 10:50 pm
Forum: National Math Olympiad (BdMO)
Topic: BdMO 2018 Secondary/Higher Secondary Problem 8
Replies: 3
Views: 1000

BdMO 2018 Secondary/Higher Secondary Problem 8

একটা টুর্ণামেন্ট খেলা হচ্ছে $n$ জনের মধ্যে। সবাই প্রত্যেকের সাথে একবার করে খেলে। কোনো খেলায় ড্র হয় না। একটি সংখ্যা $k$ কে $n$-good বলা হবে যদি এমন কোনো টুর্ণামেন্ট থাকে যাতে করে সে টুর্ণামেন্ট এ যেকোনো $k$ জনের জন্য এমন একজন প্লেয়ার থাকে যে সেই $k$ জনের সবাইকে হারিয়েছে। a) প্রমাণ করতে হবে $n \ge...
by ahmedittihad
Tue Mar 06, 2018 2:13 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 5
Replies: 15
Views: 2247

Re: BDMO 2017 National round Secondary 5

Both have $AB$ as radius.....
by ahmedittihad
Sun Mar 04, 2018 5:12 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 1
Replies: 19
Views: 2851

Re: BDMO 2017 National round Secondary 1

(a) Bangladesh wins the series in $3$ matches iff they win all $3$ of the games. And the probability of that is $\dfrac{1}{8}$. (b) Out of the $16$ cases of a $4$ length binary string, Only 3 of them satisfy (WWLW, WLWW,LWWW). So the probability here is $\dfrac{3}{16}$. (b) Probability of winning t...
by ahmedittihad
Fri Mar 02, 2018 3:44 pm
Forum: National Math Camp
Topic: The Gonit IshChool Project - Beta
Replies: 28
Views: 3826

Re: The Gonit IshChool Project - Beta

I think the next online camp like this won't happen in a while. The national phase of BdMO is coming soon. Then there is camp. So we will be busy with stuff a lot.
by ahmedittihad
Tue Feb 20, 2018 7:13 am
Forum: Combinatorics
Topic: বিয়ে
Replies: 6
Views: 1213

Re: বিয়ে

SN.Pushpita wrote:
Mon Feb 19, 2018 12:45 pm
Dude, it isn't mathoscope :D
But I'm still the same guy.
by ahmedittihad
Tue Feb 20, 2018 7:11 am
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2017 National round Secondary 1
Replies: 19
Views: 2851

Re: BDMO 2017 National round Secondary 1

The key to understanding this problem, as Ahmed pointed out, is that not all cases are equally likely to happen . The probabilities for the series to end in exactly 3 matches and to end in exactly 4 (or 5) matches are not equal, so the 20 cases listed above cannot be treated with equal weights. In ...
by ahmedittihad
Sun Feb 18, 2018 7:49 pm
Forum: National Math Olympiad (BdMO)
Topic: BdMO National Higher Secondary 2014/2
Replies: 8
Views: 629

Re: BdMO National Higher Secondary 2014/2

What I mean is, you have posted 4 posts which you could have done in 1. That's spamming.