Cody

Problems

1 – 42 of 42
Problem Title
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Solvers
Difficulty

Problem 52562. Easy Sequences 6: Coefficient sums of derivatives

Created by: Ramon Villamangca

Tags easy, sequences, derivative

1

7

Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

Tags easy, sequences, number theory

0

7

Problem 52724. Easy Sequences 20: Counting Prime-sided Rectangles

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

Problem 52764. Easy Sequences 24: Number of Coprime Lattice Points

Created by: Ramon Villamangca

Tags easy, geometry, number theory

0

3

Problem 52784. Easy Sequences 38: Prime Number Delta

Created by: Ramon Villamangca

Tags easy, primes, number theory

1

3

Problem 52804. Easy Sequences 29: Odd proper divisors of odd proper divisors

Created by: Ramon Villamangca

Tags easy, number theory, simple

1

3

Problem 52911. Easy Sequences 41: Boxes with Integer Edges

Created by: Ramon Villamangca

Tags easy, geometry, simple

1

3

Problem 52936. Easy Sequences 39: Perfect Squares in Pascal's Triangle

Created by: Ramon Villamangca

Tags easy, numbers, simple

0

4

Problem 52978. Easy Sequences 44: Finding the Smallest Number whose Cube is divisible by a Factorial

Created by: Ramon Villamangca

Tags easy, number theory, simple

1

3

Problem 53119. Easy Sequences 53: Greatest Proper Divisor

Created by: Ramon Villamangca

Tags easy, number theory, simple

3

3

Problem 53735. Easy Sequences 58: Curious Prime-Rational Functions

Created by: Ramon Villamangca

Tags easy, primes, function

0

3

Problem 52819. Easy Sequences 30: Nearly Pythagorean Triangles

Created by: Ramon Villamangca

Tags easy, geometry, number theory

2

17

Problem 52729. Easy Sequences 21: Combinatorial Summations

Created by: Ramon Villamangca

Tags easy, combinatorics, number theory

2

3

Problem 52973. Easy Sequences 45: Second Derivative of Inverse Polynomial Function

Created by: Ramon Villamangca

Tags easy, calculus, simple

1

3

Problem 53029. Easy Sequences 49: Prime Little Omega Function

Created by: Ramon Villamangca

Tags easy, primes, simple

1

2

Problem 53079. Easy Sequences 50: Blocked Gaussian Integers

Created by: Ramon Villamangca

Tags easy, number theory, simple

1

2

Problem 52574. Easy Sequences 8: Triangles with integer sides and prime perimeters

Created by: Ramon Villamangca

Tags easy, sequences, primes

1

6

Problem 52614. Easy Sequences 12: 50th Prime

Created by: Ramon Villamangca

Tags easy, sequences, primes

0

5

Problem 52769. Easy Sequences 22: Sum of Proper Fractions

Created by: Ramon Villamangca

Tags easy, number theory, sequence

1

5

Problem 52709. Easy Sequences 19: Length of Prime-sided Rectangle with Maximum Area

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

Problem 52968. Easy Sequences 43: Least Common Fibonacci Number

Created by: Ramon Villamangca

Tags easy, fibonacci, simple

2

3

Problem 53094. Easy Sequences 51: Positive Gaussian Primes

Created by: Ramon Villamangca

Tags easy, primes, simple

2

3

Problem 52866. Easy Sequences 36: Hyperbolic Lattice Points

Created by: Ramon Villamangca

Tags easy, number theory, simple

0

4

Problem 52861. Easy Sequences 37: Natural Factorable Polynomials

Created by: Ramon Villamangca

Tags easy, algebra, number theory

2

5

Problem 42787. How many ways to write

Created by: Pritom Kumar Mondal

Tags math, easy, counting

0

8

Problem 52659. Easy Sequences 15: Pythagorean Area with maximum Hypotenuse

Created by: Ramon Villamangca

Tags easy, geometry, number theory

1

4

Problem 52684. Easy Sequences 17: Mu Variant Function

Created by: Ramon Villamangca

Tags easy, sequences, function

0

2

Problem 52834. Easy Sequences 32: Almost Pythagorean Triples

Created by: Ramon Villamangca

Tags easy, geometry, number theory

2

3

Problem 52844. Easy Sequences 42: Areas of Non-constructible Polygons

Created by: Ramon Villamangca

Tags easy, geometry, simple

0

1

Problem 52859. Easy Sequences 35: Cutting a donut to Semi-prime pieces

Created by: Ramon Villamangca

Tags easy, number theory, simple

0

3

Problem 52985. Easy Sequences 47: Boxes with Prime Edges

Created by: Ramon Villamangca

Tags easy, primes, geometry

2

4

Problem 52990. Easy Sequences 46: Semi-prime Leap Year Pairs

Created by: Ramon Villamangca

Tags easy, number theory, simple

0

1

Problem 53009. Easy Sequences 48: Prime Big Omega of Factorial Sequence

Created by: Ramon Villamangca

Tags easy, primes, number theory

1

3

Problem 53125. Easy Sequences 54: Product of Products of Proper Divisors

Created by: Ramon Villamangca

Tags easy, number theory, simple

1

2

Problem 53730. Easy Sequences 57: "Pretty-gorean" Triangles?

Created by: Ramon Villamangca

Tags easy, geometry, number theory

0

1

Problem 53740. Easy Sequences 59: Almost Twin Primes

Created by: Ramon Villamangca

Tags easy, primes, number theory

1

2

Problem 53745. Easy Sequences 60: Almost Cube Root

Created by: Ramon Villamangca

Tags easy, number theory, simple

1

3

Problem 53750. Easy Sequences 63: Base-63 Arithmetic Functions

Created by: Ramon Villamangca

Tags easy, basics, number theory

1

1

Problem 53905. Easy Sequences 64: Base-14 Arithmetic Function

Created by: Ramon Villamangca

Tags easy, basics, number theory

0

3

Problem 53930. Easy Sequences 65: Fractional Part of Square Roots

Created by: Ramon Villamangca

Tags easy, number theory, simple

0

2

Problem 53965. Easy Sequences 67: Project Euler Problem 1 - Not Again!!!

Created by: Ramon Villamangca

Tags easy, projecteuler, number theory

2

2

Problem 52567. Easy Sequences 7: Easy as Composite Pi

Created by: Ramon Villamangca

Tags easy, sequences, primes

0

2
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