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All problems with tag: Number-Theory



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Name сортировать Difficulty сортировать Users
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Prime Sets 500 8 Combinatorics, Number-Theory
Special square 500 52 Number-Theory, Squares
Reverse Product 400 33 Combinatorics, Number-Theory
Viet said 500 94 Number-Theory
Relatively prime with 2020 200 205 Number-Theory, Prime-Numbers
Positive product of sums 300 59 Algebra, Equations, Number-Theory
Odd divisors 300 78 Number-Theory, Divisors
Squared fours 200 172 Number-Theory, Algebra
Divisibility by 4 200 196 Number-Theory, Digits
Interesting functions 600 12 Number-Theory
Tricky sequence 500 28 Number-Theory, Algebra, Sequences
All such 400 61 Number-Theory, Equations
x[x] 400 48 Number-Theory, Floor-Function
335577 500 32 Number-Theory, Powers
Sum of digits 2020 200 144 Number-Theory, Digits
Progressive sequence 500 18 Algebra, Number-Theory, Sequences
Tricky 400 60 Number-Theory
Good Order 600 3 Algebra, Number-Theory
Almost squared numbers 300 41 Number-Theory
Exactly two roots 400 47 Number-Theory, Equations
NRD pair 200 89 Number-Theory, Prime-Numbers
VNT 500 96 Number-Theory, LTE
U turn 200 142 Algebra, Number-Theory, Digits
Arithmetic derivative 500 39 Number-Theory, Functions
Concatenate 500 14 Number-Theory
Rational Irrational 300 28 Algebra, Number-Theory
Cool-divisble numbers 300 64 Number-Theory, Digits
Sum of Digits 200 60 Number-Theory, Digits
Powered Numbers (Duplicate) 300 49 Algebra, Number-Theory
Simple Altai 400 17 Number-Theory
Mathrix 600 3 Algebra, Number-Theory, Matrices
Math lesson 400 39 Number-Theory, Combinatorics
Interesting permutations 600 2 Number-Theory
Small triangular numbers 200 128 Algebra, Number-Theory
Sequence 300 41 Number-Theory
Cuboid 300 26 Number-Theory
Flip 200 61 Algebra, Number-Theory, Digits
Base4 300 30 Number-Theory
Powered Numbers 300 50 Algebra, Number-Theory
Irreducible Fractions 200 62 Number-Theory
Nice Integer 400 5 Number-Theory, Algebra, Polynomials
Factorial Factor 200 54 Number-Theory, Combinatorics
!Fancy cubic 300 64 Algebra, Number-Theory
Binary Sum 500 23 Number-Theory, Algebra
Cube Cube Square 300 24 Algebra, Number-Theory
Not constant 300 22 Algebra, Number-Theory
Five Primes 100 99 Number-Theory
Lin's Numbers 400 28 Number-Theory, Algebra
Quadratic 300 42 Algebra, Number-Theory
Lin does shopping 200 24 Algebra, Number-Theory
!Fancy sequence 600 8 Combinatorics, Number-Theory