The William Lowell Putnam Mathematical Competition

Statistics on the 2009 Competition

This table indicates, for each score achieved, the average rank of the participants receiving that score.

Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank
111	1	65	29	45	126	35	208	18	966
109	2	62	31	43	128.5	34	211	17	992.5
100	3	61	36	42	134.5	33	217	15	997
98	4	60	44	41	142.5	32	236	14	1003.5
97	5	59	53.5	40	157	31	263.5	13	1018.5
90	6	58	60.5	39	171	30	311	12	1083
86	7.5	57	63.5	38	179.5	29	364	11	1180
80	9	56	66	37.9	186.5	28	395	10	1461
79	10.5	54	68	37.8	189.5	27	411	9	1765.5
75	12	53	69.5	37.7	191.5	26	418.5	8	1868
74	13	52	75	37.6	193.5	25	423.5	6	1906
73	14.5	51	80.5	37.5	195.5	24	431	4	1913.5
72	17.5	50	89.5	37.4	197.5	23	441	3	1925.5
71	21.5	49	102.5	37.3	199	22	478.5	2	2027.5
70	24.5	48	113.5	37.2	200	21	543	1	2198
69	26.5	47	121.5	37	202	20	707	0	3154
68	28	46	124.5	36	205	19	892

This table shows how many of the top 200 contestants received each possible score on each problem.

	A1	A2	A3	A4	A5	A6	B1	B2	B3	B4	B5	B6	Total
10	193	84	81	49	26	5	142	62	105	56	7	2	812
9	4	22	6	27	5	2	33	3	22	13	4	0	141
8	2	24	6	23	1	1	15	0	9	3	3	3	90
7	0	0	0	0	0	0	0	0	0	0	0	0	0
6	0	0	0	0	0	0	0	0	0	0	0	0	0
5	0	0	0	0	0	0	0	0	0	0	0	0	0
4	0	0	0	0	0	0	0	0	0	0	0	0	0
3	0	0	0	0	0	0	0	0	0	0	0	0	0
2	0	6	6	6	6	0	3	63	6	1	1	1	99
1	0	8	2	11	6	0	2	13	4	7	6	0	59
0	1	40	39	54	70	53	5	49	26	59	84	47	527
blank	0	16	60	30	86	139	0	10	28	61	95	147	672

Transcribed to HTML by Kiran S. Kedlaya (kedlaya[at]mit[dot]edu).