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Problems

Math
Difficulty
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7817
Good number
7822
MISSING NUMBER
Very easy
7835
Seven primes
Medium
7839
Sum in sympathetic table
Easy
7840
Joy of computer scientist
Easy
7855
Euclidean TSP
Very easy
7857
Gathering
Medium
7884
Safe
Easy
7887
Bank
Hard
7914
Golf Bot
Easy
7934
Candle Box
Very easy
8172
Polyhedra
8245
Short cube
Hard
8278
Sum of even numbers
Easy
8279
Sum of divisors
8282
Stars
Very easy
8287
Petro is an entrepreneur
Easy
8299
TIME FOR COFFEE
Very easy
8362
Multiples
Very easy
8367
Taxi
Easy
8380
Escalator
Easy
8381
How many numbers
Easy
8502
VaR
8508
Numbers
Medium
8518
Modulo 11
Easy
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