Combinatorics

Badge Level 4 × 170

Solve 20 problems on Combinatorics topic.

# User Unlock date Country XP
20 Mark Mammel April 4, 2013, 2:49 a.m. 319
19 Natalya Ginzburg April 1, 2013, 8:54 a.m. 109
18 Myke March 26, 2013, 6:26 p.m. 110
17 Aleksey Romanenko March 25, 2013, 10:40 a.m. 115
16 Timur Turaev March 25, 2013, 6:28 a.m. 127
15 netoctone March 24, 2013, 3:26 p.m. 175
14 Kevin Lyles March 23, 2013, 9:26 p.m. 132
13 Zorn March 19, 2013, 2:14 a.m.   103
12 kobak March 18, 2013, 7:31 p.m.   108
11 Alexander Potashev March 18, 2013, 10:31 a.m. 206
10 Roman Andreev March 6, 2013, 8:54 p.m. 119
9 leafmoon March 4, 2013, 8:05 a.m. 316
8 sarasouju March 1, 2013, 4:14 a.m. 121
7 bred Feb. 25, 2013, 8:31 p.m. 188
6 alexis Feb. 25, 2013, 5:28 p.m.   118
5 David Powell Feb. 25, 2013, 10:17 a.m. 210
4 yuan Feb. 23, 2013, 8:43 p.m.   119
3 Xiaofan Zhou Feb. 23, 2013, 4:47 p.m. 181
2 abeliangrape Feb. 23, 2013, 10:40 a.m.   134
1 Alexander Vints Feb. 22, 2013, 2:54 p.m. 171

Combinatorics

The mathematics of counting objects.

0 / 22

Problems Solved