Maths Olympiad Prep

Library /CEMC Gauss (Grade 8)

CEMC Gauss (Grade 8)

213 problems here, rated 1 to 4.9 on our scale (Junior to AIME). Years covered: 2012–2026.

Algebra 135Combinatorics 16Geometry 37Number theory 25
#TopicDiffTypeYear
1 Algebra 1.0 answer 2026 open
2 Algebra 1.0 answer 2017 open
3 Algebra 1.0 answer 2023 open
4 Algebra 1.0 answer 2020 open
5 Algebra 1.0 answer 2018 open
6 Number theory 1.0 answer 2024 open
7 Algebra 1.0 answer 2015 open
8 Algebra 1.0 answer 2012 open
9 Algebra 1.0 answer 2019 open
10 Algebra 1.1 answer 2017 open
11 Algebra 1.1 answer 2026 open
12 Geometry 1.1 answer 2024 open
13 Algebra 1.1 answer 2020 open
14 Algebra 1.1 answer 2015 open
15 Algebra 1.1 answer 2023 open
16 Geometry 1.1 answer 2019 open
17 Algebra 1.1 answer 2013 open
18 Algebra 1.1 answer 2014 open
19 Algebra 1.1 answer 2018 open
20 Algebra 1.1 answer 2018 open
21 Algebra 1.1 answer 2014 open
22 Algebra 1.1 answer 2024 open
23 Algebra 1.1 answer 2020 open
24 Algebra 1.1 answer 2022 open
25 Algebra 1.1 answer 2025 open
26 Algebra 1.1 answer 2013 open
27 Number theory 1.1 answer 2023 open
28 Algebra 1.1 answer 2012 open
29 Algebra 1.1 answer 2022 open
30 Algebra 1.1 answer 2017 open
31 Algebra 1.1 answer 2025 open
32 Geometry 1.1 answer 2014 open
33 Algebra 1.1 answer 2018 open
34 Algebra 1.1 answer 2020 open
35 Number theory 1.1 answer 2019 open
36 Algebra 1.1 answer 2024 open
37 Algebra 1.1 answer 2026 open
38 Algebra 1.1 answer 2023 open
39 Algebra 1.2 answer 2017 open
40 Algebra 1.2 answer 2013 open
41 Algebra 1.2 answer 2015 open
42 Algebra 1.2 answer 2022 open
43 Algebra 1.2 answer 2026 open
44 Algebra 1.2 answer 2012 open
45 Geometry 1.2 answer 2020 open
46 Algebra 1.2 answer 2023 open
47 Number theory 1.2 answer 2019 open
48 Geometry 1.2 answer 2015 open
49 Algebra 1.2 answer 2014 open
50 Algebra 1.2 answer 2018 open
51 Algebra 1.2 answer 2012 open
52 Algebra 1.2 answer 2024 open
53 Algebra 1.2 answer 2013 open
54 Number theory 1.2 answer 2020 open
55 Geometry 1.2 answer 2017 open
56 Geometry 1.2 answer 2026 open
57 Combinatorics 1.2 answer 2020 open
58 Algebra 1.2 answer 2012 open
59 Number theory 1.2 answer 2014 open
60 Algebra 1.2 answer 2022 open
61 Algebra 1.2 answer 2024 open
62 Algebra 1.2 answer 2023 open
63 Algebra 1.2 answer 2015 open
64 Algebra 1.2 answer 2017 open
65 Algebra 1.2 answer 2026 open
66 Algebra 1.3 answer 2023 open
67 Combinatorics 1.3 answer 2026 open
68 Algebra 1.3 answer 2022 open
69 Algebra 1.3 answer 2013 open
70 Algebra 1.3 answer 2018 open
71 Algebra 1.3 answer 2015 open
72 Algebra 1.3 answer 2020 open
73 Algebra 1.3 answer 2017 open
74 Geometry 1.3 answer 2014 open
75 Algebra 1.3 answer 2022 open
76 Combinatorics 1.3 answer 2020 open
77 Algebra 1.3 answer 2023 open
78 Algebra 1.3 answer 2015 open
79 Algebra 1.3 answer 2017 open
80 Algebra 1.3 answer 2014 open
81 Number theory 1.3 answer 2024 open
82 Algebra 1.3 answer 2012 open
83 Geometry 1.4 answer 2023 open
84 Algebra 1.4 answer 2018 open
85 Algebra 1.4 answer 2014 open
86 Number theory 1.4 answer 2026 open
87 Geometry 1.4 answer 2024 open
88 Algebra 1.4 answer 2015 open
89 Algebra 1.4 answer 2013 open
90 Algebra 1.4 answer 2020 open
91 Algebra 1.4 answer 2017 open
92 Combinatorics 1.4 answer 2020 open
93 Algebra 1.4 answer 2024 open
94 Algebra 1.4 answer 2013 open
95 Algebra 1.4 answer 2025 open
96 Geometry 1.4 answer 2012 open
97 Algebra 1.4 answer 2018 open
98 Algebra 1.4 answer 2026 open
99 Algebra 1.4 answer 2015 open
100 Geometry 1.4 answer 2014 open
101 Algebra 1.4 answer 2025 open
102 Algebra 1.4 answer 2012 open
103 Number theory 1.4 answer 2024 open
104 Algebra 1.4 answer 2018 open
105 Algebra 1.4 answer 2017 open
106 Algebra 1.4 answer 2026 open
107 Algebra 1.4 answer 2022 open
108 Algebra 1.4 answer 2025 open
109 Algebra 1.4 answer 2020 open
110 Algebra 1.4 answer 2018 open
111 Algebra 1.5 answer 2024 open
112 Algebra 1.5 answer 2023 open
113 Number theory 1.5 answer 2018 open
114 Algebra 1.5 answer 2012 open
115 Algebra 1.5 answer 2019 open
116 Geometry 1.5 answer 2013 open
117 Combinatorics 1.5 answer 2012 open
118 Geometry 1.5 answer 2014 open
119 Geometry 1.5 answer 2023 open
120 Number theory 1.5 answer 2013 open
121 Number theory 1.5 answer 2024 open
122 Combinatorics 1.5 answer 2019 open
123 Algebra 1.6 answer 2012 open
124 Algebra 1.6 answer 2023 open
125 Algebra 1.6 answer 2022 open
126 Algebra 1.6 answer 2019 open
127 Algebra 1.6 answer 2018 open
128 Geometry 1.6 answer 2012 open
129 Algebra 1.6 answer 2013 open
130 Algebra 1.6 answer 2017 open
131 Algebra 1.6 answer 2022 open
132 Algebra 1.6 answer 2015 open
133 Geometry 1.7 answer 2019 open
134 Algebra 1.7 answer 2020 open
135 Algebra 1.7 answer 2017 open
136 Algebra 1.7 answer 2025 open
137 Algebra 1.7 answer 2012 open
138 Algebra 1.8 answer 2023 open
139 Algebra 1.8 answer 2014 open
140 Algebra 2.1 answer 2013 open
141 Geometry 2.2 answer 2022 open
142 Geometry 2.4 answer 2023 open
143 Geometry 2.4 answer 2019 open
144 Geometry 2.4 answer 2023 open
145 Geometry 2.4 answer 2017 open
146 Geometry 2.5 answer 2024 open
147 Algebra 2.5 answer 2019 open
148 Algebra 2.5 answer 2012 open
149 Algebra 2.5 answer 2014 open
150 Algebra 2.5 answer 2026 open
151 Combinatorics 2.5 answer 2015 open
152 Algebra 2.5 answer 2026 open
153 Algebra 2.5 answer 2025 open
154 Geometry 2.5 answer 2014 open
155 Geometry 2.5 answer 2015 open
156 Algebra 2.5 answer 2025 open
157 Combinatorics 2.5 answer 2023 open
158 Number theory 2.5 answer 2018 open
159 Number theory 2.6 answer 2015 open
160 Algebra 2.6 answer 2014 open
161 Algebra 2.6 answer 2026 open
162 Geometry 2.7 answer 2026 open
163 Algebra 2.7 answer 2018 open
164 Algebra 2.7 answer 2015 open
165 Algebra 2.7 answer 2024 open
166 Algebra 2.7 answer 2023 open
167 Algebra 2.7 answer 2022 open
168 Geometry 2.7 answer 2015 open
169 Algebra 2.7 answer 2012 open
170 Algebra 2.7 answer 2013 open
171 Number theory 2.7 answer 2026 open
172 Algebra 2.7 answer 2020 open
173 Algebra 2.7 answer 2013 open
174 Algebra 2.7 answer 2018 open
175 Algebra 2.7 answer 2019 open
176 Geometry 2.7 answer 2014 open
177 Algebra 2.8 answer 2017 open
178 Algebra 2.8 answer 2022 open
179 Geometry 2.8 answer 2013 open
180 Algebra 2.8 answer 2024 open
181 Algebra 2.8 answer 2015 open
182 Algebra 2.9 answer 2013 open
183 Geometry 3.6 answer 2025 open
184 Algebra 3.6 answer 2020 open
185 Number theory 3.7 answer 2020 open
186 Geometry 3.7 answer 2018 open
187 Geometry 3.7 answer 2023 open
188 Geometry 3.8 answer 2014 open
189 Number theory 3.8 answer 2019 open
190 Number theory 3.8 answer 2019 open
191 Algebra 3.8 answer 2015 open
192 Algebra 3.8 answer 2023 open
193 Number theory 3.8 answer 2025 open
194 Combinatorics 3.8 answer 2017 open
195 Algebra 3.8 answer 2013 open
196 Number theory 3.8 answer 2026 open
197 Number theory 3.8 answer 2022 open
198 Number theory 4.6 answer 2026 open
199 Number theory 4.7 answer 2017 open
200 Geometry 4.7 answer 2019 open
201 Geometry 4.8 answer 2026 open
202 Combinatorics 4.8 answer 2026 open
203 Geometry 4.8 answer 2020 open
204 Geometry 4.8 answer 2017 open
205 Combinatorics 4.8 answer 2019 open
206 Algebra 4.8 answer 2015 open
207 Combinatorics 4.8 answer 2020 open
208 Combinatorics 4.8 answer 2012 open
209 Combinatorics 4.9 answer 2025 open
210 Number theory 4.9 answer 2014 open
211 Combinatorics 4.9 answer 2023 open
212 Combinatorics 4.9 answer 2017 open
213 Number theory 4.9 answer 2015 open
These are sorted by difficulty within the competition, but they aren't a course. The track is the route through, drawn from all the sources at once.