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Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 138 - Street Numbers 22186
45.49%
9013
84.76%
FILE 10006 - Carmichael Numbers 45641
38.06%
10994
85.40%
FILE 128 - Software CRC 20285
42.93%
4546
88.03%
FILE 106 - Fermat vs. Pythagoras 30350
34.14%
7166
67.40%
FILE 10673 - Play with Floor and Ceil 12722
48.64%
3927
89.02%
FILE 11121 - Base -2 6163
58.14%
2477
94.35%
FILE 10791 - Minimum Sum LCM 24885
27.21%
3307
83.04%
FILE 10717 - Mint 7640
39.83%
2282
87.69%
FILE 10820 - Send a Table 9279
59.27%
2692
91.46%
FILE 571 - Jugs 10405
45.86%
3074
87.70%
FILE 11029 - Leading and Trailing 11409
33.29%
2814
79.03%
FILE 10023 - Square root 50818
23.12%
6443
32.78%
FILE 10308 - Roads in the North 9924
35.00%
1983
73.12%
FILE 10105 - Polynomial Coefficients 9827
63.80%
4647
92.73%
FILE 10375 - Choose and divide 9987
49.85%
2556
84.08%
FILE 11027 - Palindromic Permutation 1859
39.16%
479
77.66%
FILE 10056 - What is the Probability ? 19527
42.73%
5287
90.47%
FILE 10491 - Cows and Cars 10246
67.92%
4155
96.10%
FILE 10759 - Dice Throwing 3785
61.98%
1616
96.53%
FILE 542 - France '98 3427
62.50%
1836
90.03%
FILE 10277 - Boastin' Red Socks 2391
27.48%
519
79.00%
FILE 10169 - Urn-ball Probabilities! 2309
38.20%
666
77.33%
FILE 11181 - Probability|Given 6597
57.39%
1632
95.89%
FILE 557 - Burger 4451
38.62%
1438
62.38%
FILE 10900 - So you want to be a 2n-aire? 1751
78.36%
790
92.78%
FILE 11176 - Winning Streak 1757
53.44%
631
88.11%
FILE 10417 - Gift Exchanging 1107
36.04%
328
73.17%
FILE 10183 - How Many Fibs? 25804
33.87%
7524
83.89%
FILE 10303 - How Many Trees? 7488
40.41%
2755
79.38%
FILE 10518 - How Many Calls? 5595
44.72%
1427
88.58%
FILE 10862 - Connect the Cable Wires 3676
55.88%
1603
91.52%
FILE 10334 - Ray Through Glasses 12590
52.06%
5718
89.02%
FILE 10229 - Modular Fibonacci 19082
37.19%
5300
80.02%
FILE 763 - Fibinary Numbers 11649
24.05%
2603
71.80%
FILE 10236 - The Fibonacci Primes 3913
25.22%
720
62.08%
FILE 991 - Safe Salutations 11156
37.66%
3212
90.78%
FILE 10079 - Pizza Cutting 55482
44.37%
18680
94.18%
FILE 10940 - Throwing cards away II 12615
49.62%
4376
86.11%
FILE 10359 - Tiling 4943
53.33%
2091
93.93%
FILE 10519 - !! Really Strange !! 4877
37.91%
1774
84.55%
FILE 10918 - Tri Tiling 5757
60.20%
2430
96.30%
FILE 11069 - A Graph Problem 6009
72.27%
3044
97.57%
FILE 10910 - Marks Distribution 6809
52.42%
2514
93.20%
FILE 10254 - The Priest Mathematician 6049
45.07%
1815
86.01%
FILE 10328 - Coin Toss 3048
39.73%
858
78.79%
FILE 10157 - Expressions 5754
33.45%
1555
70.23%
FILE 10247 - Complete Tree Labeling 3863
40.64%
1194
81.07%
FILE 10516 - Another Counting Problem 808
45.92%
334
89.22%
FILE 10128 - Queue 8863
51.26%
3027
89.13%
FILE 10081 - Tight Words 5715
52.07%
2301
90.40%
FILE 10943 - How do you add? 20851
49.23%
6117
93.77%
FILE 10721 - Bar Codes 10120
53.91%
3471
94.35%
FILE 10912 - Simple Minded Hashing 7973
40.57%
2140
89.39%
FILE 10616 - Divisible Group Sums 16103
37.20%
3907
90.45%
FILE 11125 - Arrange Some Marbles 1517
38.69%
422
86.02%
FILE 10205 - Stack 'em Up 19881
33.54%
5792
83.46%
FILE 701 - The Archeologists' Dilemma 23488
32.52%
4632
68.91%
FILE 696 - How Many Knights 17140
38.70%
5089
88.98%
FILE 254 - Towers of Hanoi 7041
19.98%
1778
50.22%
FILE 10994 - Simple Addition 12043
29.40%
2751
64.89%
FILE 306 - Cipher 11515
22.28%
2482
63.34%
FILE 10570 - Meeting with Aliens 3592
43.54%
825
83.39%
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