The William Lowell Putnam Mathematical Competition

Statistics on the 2021 Competition

Score-Rank Correspondence

A participant is said to have rank n if n-1 participants scored higher. (Editorial note: this convention differs from previous years.)

Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank
119	1	68	28	51	55	35	127	21	329	7	1022
110	2	67	29	50	57	34	130	20	352	6	1067
99	3	66	30	49	65	33	136	19	404	5	1142
90	4	65	32	48	70	32	150	18	423	4	1314
89	5	64	33	46	72	31	167	17	449	3	2200
83	6	61	34	45	74	30	193	16	464	2	2270
82	7	60	35	44	77	29	212	15	489	1	2327
80	8	59	37	43	80	28	225	14	536	0	2431
79	9	58	40	42	84	27	238	13	635
77	11	57	41	41	89	26	244	12	671
75	16	56	42	40	96	25	252	11	739
73	18	55	45	39	106	24	265	10	829
72	20	53	46	38	112	23	282	9	956
71	21	52	50	36	123	22	303	8	979

Frequency Distribution of Problem Scores of the Top 535 Contestants

Score	A1	A2	A3	A4	A5	A6	B1	B2	B3	B4	B5	B6
10	369	239	66	7	130	4	204	114	28	27	58	8
9	14	14	2	0	20	1	18	12	10	40	4	1
8	36	36	4	2	5	1	47	1	0	12	1	2
7	4	14	2	2	3	0	16	0	0	0	2	0
6	8	0	0	0	0	0	0	0	0	0	0	0
5	0	0	0	0	0	0	0	0	0	0	0	0
4	93	0	0	0	0	0	0	0	0	0	0	0
3	0	31	39	0	6	0	0	1	0	0	1	0
2	2	41	49	0	35	0	23	11	2	34	0	0
1	1	44	52	1	34	1	32	102	3	35	4	16
0	6	59	78	115	114	150	115	124	80	62	94	52
NA	2	57	243	408	188	378	80	170	412	325	424	456

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