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Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 138 - Street Numbers 21969
45.56%
8949
84.77%
FILE 10006 - Carmichael Numbers 44764
37.98%
10841
85.39%
FILE 128 - Software CRC 20041
42.93%
4473
88.22%
FILE 106 - Fermat vs. Pythagoras 29840
34.28%
7054
67.38%
FILE 10673 - Play with Floor and Ceil 12227
48.08%
3849
88.85%
FILE 11121 - Base -2 5836
58.65%
2423
94.35%
FILE 10791 - Minimum Sum LCM 23864
27.34%
3221
82.96%
FILE 10717 - Mint 7136
40.57%
2192
87.55%
FILE 10820 - Send a Table 9024
58.85%
2625
91.35%
FILE 571 - Jugs 9660
45.30%
2997
87.65%
FILE 11029 - Leading and Trailing 9661
33.47%
2448
79.45%
FILE 10023 - Square root 45597
20.91%
6251
31.02%
FILE 10308 - Roads in the North 8428
35.16%
1851
72.29%
FILE 10105 - Polynomial Coefficients 9248
63.54%
4307
92.87%
FILE 10375 - Choose and divide 9752
49.68%
2508
83.89%
FILE 11027 - Palindromic Permutation 1848
38.96%
474
77.64%
FILE 10056 - What is the Probability ? 16252
42.51%
4705
89.84%
FILE 10491 - Cows and Cars 9649
67.81%
4016
96.07%
FILE 10759 - Dice Throwing 3611
62.56%
1592
96.67%
FILE 542 - France '98 3356
62.75%
1804
90.24%
FILE 10277 - Boastin' Red Socks 2373
27.35%
513
79.14%
FILE 10169 - Urn-ball Probabilities! 2058
37.90%
615
76.26%
FILE 11181 - Probability|Given 5427
57.16%
1351
96.23%
FILE 557 - Burger 4276
38.54%
1391
61.11%
FILE 10900 - So you want to be a 2n-aire? 1650
78.73%
748
93.32%
FILE 11176 - Winning Streak 1648
54.49%
612
88.07%
FILE 10417 - Gift Exchanging 1088
35.75%
318
74.21%
FILE 10183 - How Many Fibs? 24747
33.22%
7092
83.33%
FILE 10303 - How Many Trees? 7344
40.73%
2727
79.39%
FILE 10518 - How Many Calls? 5238
44.18%
1387
88.39%
FILE 10862 - Connect the Cable Wires 3629
55.72%
1586
91.49%
FILE 10334 - Ray Through Glasses 12234
52.57%
5675
89.00%
FILE 10229 - Modular Fibonacci 17652
36.68%
5131
79.91%
FILE 763 - Fibinary Numbers 11366
24.11%
2571
71.65%
FILE 10236 - The Fibonacci Primes 3857
25.10%
701
61.63%
FILE 991 - Safe Salutations 10219
38.23%
3085
91.28%
FILE 10079 - Pizza Cutting 53255
44.40%
18441
94.17%
FILE 10940 - Throwing cards away II 12080
50.06%
4336
86.09%
FILE 10359 - Tiling 4740
53.84%
2055
94.11%
FILE 10519 - !! Really Strange !! 4845
37.92%
1767
84.61%
FILE 10918 - Tri Tiling 5563
60.08%
2397
96.33%
FILE 11069 - A Graph Problem 5823
72.14%
3010
97.67%
FILE 10910 - Marks Distribution 6671
52.29%
2477
93.22%
FILE 10254 - The Priest Mathematician 5500
45.84%
1633
86.41%
FILE 10328 - Coin Toss 2800
40.39%
829
78.89%
FILE 10157 - Expressions 5467
33.07%
1430
70.35%
FILE 10247 - Complete Tree Labeling 3584
40.68%
1096
80.57%
FILE 10516 - Another Counting Problem 791
45.64%
327
89.30%
FILE 10128 - Queue 8446
51.12%
2891
89.48%
FILE 10081 - Tight Words 5242
52.98%
2200
90.50%
FILE 10943 - How do you add? 20193
49.31%
5996
93.78%
FILE 10721 - Bar Codes 9225
52.77%
3348
94.44%
FILE 10912 - Simple Minded Hashing 6971
40.35%
1979
89.39%
FILE 10616 - Divisible Group Sums 15434
37.15%
3838
90.31%
FILE 11125 - Arrange Some Marbles 1481
38.28%
416
86.06%
FILE 10205 - Stack 'em Up 18344
32.39%
5165
82.42%
FILE 701 - The Archeologists' Dilemma 22825
32.35%
4386
68.22%
FILE 696 - How Many Knights 15615
38.80%
4931
88.99%
FILE 254 - Towers of Hanoi 6904
20.02%
1753
50.14%
FILE 10994 - Simple Addition 11827
29.31%
2724
64.79%
FILE 306 - Cipher 11400
22.10%
2453
63.39%
FILE 10570 - Meeting with Aliens 3468
43.63%
804
83.33%
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