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High School Pre-Olympiad (Ages 14+)

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12265 Topics • Page 1 of 246 • 1, 2, 3, ..., 244, 245, 246 Next

Topics		Author	Replies	Views	Last Post
Stickies
	Olympiad Algebra Tournament 10 challenging rounds! [ Goto page: 1, 2, 3, ..., 8, 9, 10 ]	ghjk	180	6417	Yesterday, at 11:11 pm kurt.math
	Proof contest [ Goto page: 1, 2, 3, ..., 8, 9, 10 ]	chess64	188	35113	Tue Jun 09, 2009 5:55 am Bugi
	When people respond to a question you ask...	t0rajir0u	3	1391	Sun Feb 08, 2009 8:45 am worthawholebean
	Please hide your solutions!	worthawholebean	6	2002	Mon Sep 29, 2008 2:47 pm MellowMelon
Topics
	Find Range 4-Degree	RAGHAV GROVER	1	15	Today, at 7:41 am Kouichi Nakagawa
	Prove Inequality	RAGHAV GROVER	1	19	Today, at 7:28 am antiparticle
	Prove that OQ is perpendicular to EF iff QE = QF.	mathwizarddude	2	53	Today, at 6:18 am dgreenb801
	sequence and series find the general term and sum of series	joshisunny16	2	79	Today, at 12:13 am joshisunny16
	Non coplanar points AMTI (J) 99	harekrishna	0	31	Yesterday, at 9:49 pm harekrishna
	Shape of polynomial roots	Twinbee	5	125	Yesterday, at 9:39 pm fedja
	Constant sum in the square (繼續的量)	Tiger100	0	48	Yesterday, at 5:38 pm Tiger100
	Nice collinear	mathVNpro	3	60	Yesterday, at 5:15 pm Tiger100
	System of Diophantines	Zhero	4	150	Yesterday, at 3:45 pm ffao
	Find the number of (x,y) satisfy the following condition	Rose_joker	3	110	Yesterday, at 2:28 pm chrischris
	A very nice identity. (own ?!)	Virgil Nicula	1	54	Yesterday, at 1:47 pm Bugi
	Primes nice problem	panos_lo	2	85	Yesterday, at 9:37 am panos_lo
	angle BCF	jelly119	1	41	Yesterday, at 9:07 am chrischris
	Angle ABC	jelly119	2	97	Yesterday, at 8:42 am jelly119
	compute the height of the pyramid Netherlands 1995	moldovan	4	109	Yesterday, at 6:40 am abacadaea
	prime numbers	ouboujlal	5	146	Yesterday, at 5:34 am jin thynj
	Find the minimum value Fibonacci	mathwizarddude	3	113	Thu Jul 02, 2009 9:19 pm TZF
	Find the Locus	keyree10	2	61	Thu Jul 02, 2009 9:14 pm TZF
	Circles Source: My own	1=2	3	129	Thu Jul 02, 2009 6:03 pm Yongyi781
	ineaquality not all greater than...	ElChapin	4	147	Thu Jul 02, 2009 11:39 am ElChapin
	mosp 2002-2	madadpoor	0	64	Wed Jul 01, 2009 7:53 pm madadpoor
	partitioned square Ireland 1994	moldovan	1	94	Wed Jul 01, 2009 7:30 pm azjps
	equations Ireland 1994	moldovan	1	115	Wed Jul 01, 2009 7:23 pm azjps
	find all possible values Ireland 1994	moldovan	1	113	Wed Jul 01, 2009 6:46 pm azjps
	INMO problem help	1729	3	149	Wed Jul 01, 2009 6:06 pm azjps
	Inequality	tonypr	1	60	Wed Jul 01, 2009 12:35 pm 210
	Sudoku Numbers	miyomiyo	1	60	Wed Jul 01, 2009 10:33 am MellowMelon
	Recursion	RoFlLoLcOpT
	Combinatorics Just don't have enough.	1=2	1	67	Wed Jul 01, 2009 8:24 am chrischris
	inequality am-gm aplication	enndb0x	2	96	Wed Jul 01, 2009 6:13 am enndb0x
	Nice and quite easy except for point iii)	alex2008	2	150	Wed Jul 01, 2009 6:09 am tenniskidperson3
	polynomial with positive roots	Ognjen09	1	61	Wed Jul 01, 2009 3:33 am stephencheng
	Geometry	stvs_f	3	107	Wed Jul 01, 2009 12:41 am stvs_f
	Inequality in two variables	alex2008	0	94	Tue Jun 30, 2009 10:52 pm alex2008
	Find the minimum value of two function of 3 variables	vuthailuan
	Find the real roots	jelly119	1	53	Tue Jun 30, 2009 8:55 pm red_dog
	Divisibility by 2^n	agrawaly	6	132	Tue Jun 30, 2009 7:55 pm Vworldv
	Arithmetics	ouboujlal	9	230	Tue Jun 30, 2009 5:44 pm madadpoor
	arithmetics	ouboujlal	16	319	Tue Jun 30, 2009 3:14 pm Mewto55555
	Complex number loophole	SorcererofDM	3	131	Tue Jun 30, 2009 12:00 pm t0rajir0u
	the 2008th term	jelly119	1	54	Tue Jun 30, 2009 9:22 am chrischris
	Nice and easy inequality	Tiger100	11	267	Tue Jun 30, 2009 5:37 am chrischris
	inequality	Ognjen09	2	110	Mon Jun 29, 2009 7:57 pm vinskman
	solve the equation	halovietnam	1	154	Mon Jun 29, 2009 11:43 am Dr Sonnhard Graubner
	(cotA+cotB)/cotC	jelly119	1	77	Mon Jun 29, 2009 9:06 am red_dog
	inscribed circle in quarter of circle	Tiger100	5	120	Mon Jun 29, 2009 7:51 am 1=2
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