Search found 92 matches

by bristy1588
Wed Dec 21, 2011 8:18 pm
Forum: Higher Secondary Level
Topic: পাঠ্যবইয়ের সমস্যা -০১ (Combinatorix)
Replies: 19
Views: 4888

Re: পাঠ্যবইয়ের সমস্যা -০১ (Combinatorix)

Labib wrote:(১) ও (২) এ সহমত।

(৬)
মালার ক্ষেত্রে মনে হয়, ২ দিয়ে ফলাফল ভাগ করতে হয়... কারন সেটাকে ঘোরানো যায়। তাই ফলাফলঃ $\frac{7!}2$।

:)
6. no tar uttor $7!$ howa uchit. Karon je kono ekta distinct band ke $8$ vabe rotate korle all possible permutaion pawar kotha
by bristy1588
Wed Dec 21, 2011 1:56 pm
Forum: Divisional Math Olympiad
Topic: Can u Factorize?
Replies: 9
Views: 2592

Re: Can u Factorize?

Mahi,
What software do u need to run it??
by bristy1588
Mon Dec 19, 2011 11:07 pm
Forum: Divisional Math Olympiad
Topic: Candles....(From CMC test)
Replies: 19
Views: 4681

Re: Candles....(From CMC test)

Any idea about the Solution??
by bristy1588
Mon Dec 19, 2011 7:24 pm
Forum: Divisional Math Olympiad
Topic: Candles....(From CMC test)
Replies: 19
Views: 4681

Re: Candles....(From CMC test)

Joty, Hehe he .. Its not Canadian Math Contest,, Its Chittagong Math Circle
by bristy1588
Mon Dec 19, 2011 12:02 am
Forum: Divisional Math Olympiad
Topic: Candles....(From CMC test)
Replies: 19
Views: 4681

Re: Candles....(From CMC test)

Rafi, Nowshin er kache $n$ sonkhok mombati ase. 1st din e, Noushin jekono 1 ta mombati 1 ghonta jalay, 2nd in e she jekono ekta mombati r prottekta 2 ghonta jalay, 3rd din e, she 3 ta mombati 3, prottektake 3 ghonta jalay,, evabe n tomo dine she n ta mombati n ghonta jalay, n-din sheshe, protita mom...
by bristy1588
Sun Dec 18, 2011 9:57 pm
Forum: Chemistry
Topic: Organic Chemistry: Alkanes
Replies: 5
Views: 2545

Re: Organic Chemistry: Alkanes

Thanx Mahi,
U have saved me some time,:D
by bristy1588
Sun Dec 18, 2011 8:40 pm
Forum: Chemistry
Topic: Organic Chemistry: Alkanes
Replies: 5
Views: 2545

Re: Organic Chemistry: Alkanes

U see, melting point increases from c-1 to c-2 and again drops from c-2 to c-3. then again increases then decreases. here c-2 denotes the Alkane with 2 carbon atoms. I was asking for the reason that will explain this irregularity
by bristy1588
Sun Dec 18, 2011 7:52 pm
Forum: Chemistry
Topic: Organic Chemistry: Alkanes
Replies: 5
Views: 2545

Organic Chemistry: Alkanes

What is the reason behind the irregularity of the melting point of the alkanes??
by bristy1588
Sun Dec 18, 2011 6:11 pm
Forum: Divisional Math Olympiad
Topic: Candles....(From CMC test)
Replies: 19
Views: 4681

Re: Candles....(From CMC test)

Labib,
Why didnt u consider the case 1. i.e When Candle$A$ was lit. How do u prove that Candle A was never lit on day $(n-2)$ ?
by bristy1588
Sun Dec 18, 2011 6:05 pm
Forum: Divisional Math Olympiad
Topic: CMC mock test (16)(Find Sum)
Replies: 3
Views: 1401

Re: CMC mock test (16)(Find Sum)

U have made a small mistake there labib. Edit it.