# Problems

51 – 83 of 83
 Problem Title Likes Solvers Difficulty

#### Problem 56195. Possible Rugby Scores

Created by: Matt Tearle

3

35

#### Problem 43650. Church Encoding

Created by: Kensuke Fujita

3

21

Created by: G K

Tags math

1

99

Created by: Ken

Tags math

4

45

#### Problem 45363. Exponentiation

Created by: Asif Newaz

Tags math, basic, modulo

1

19

#### Problem 392. Clock Hand Angle 1

Created by: @bmtran (Bryant Tran)

9

168

#### Problem 203. fly fly away

Created by: Alfonso Nieto-Castanon

Tags math

3

66

#### Problem 56288. Angle Between Analog Clock Hands

Created by: Matt Tearle

Tags math, geometry

1

34

#### Problem 19. Swap the first and last columns

Created by: Cody Team

89

16494

#### Problem 42828. fractal circles

Created by: Thomas Bischoff

Tags math

0

16

#### Problem 44066. Number of paths on a 3d grid

Created by: Jihye Sofia Seo

1

42

#### Problem 656. Calculate Euler's phi function

Created by: Freddy

1

82

#### Problem 49788. Carmichael Number

Created by: Gifari Zulkarnaen

3

9

#### Problem 594. "Look and say" sequence

Created by: Alex Feinman

1

180

#### Problem 769. Calculate the area of a triangle between three points

Tags math, triangle

22

2024

Created by: G K

2

64

#### Problem 2318. Combine Cards to make 21

Created by: James Kristoff

4

35

1

27

#### Problem 226. What are the odds?

Created by: Matt Fig

2

25

#### Problem 55235. Determine if x is a combination of m and n

Created by: Renee Bach

Tags math, vector, matrix

6

105

#### Problem 282. Circle and Quadratic

Created by: Matt Fig

Tags math

1

13

Created by: Omer

0

24

#### Problem 136. Read a Soroban Abacus

Created by: @bmtran (Bryant Tran)

17

223

Created by: G K

Tags math

2

64

#### Problem 196. love is an n-letter word

Created by: Alfonso Nieto-Castanon

2

36

#### Problem 37. Pascal's Triangle

Created by: Cody Team

23

3565

Created by: G K

Tags math

2

141

#### Problem 47. Extract leading non-zero digit

Created by: Cody Team

5

1637

#### Problem 1428. Find the optimal shape to bring the maximum product by a given perimeter

Tags math, geometry

2

40

Created by: G K

3

30

#### Problem 194. Clockwise or Counterclockwise

Created by: Alfonso Nieto-Castanon

Tags math, polygon

4

102

#### Problem 44741. You are constantly moving at a speed v faster than your twin brother. How long does it take before you become 1s younger than him according to the theory of relativity?

Created by: Mikael Andblom

0

4

#### Problem 193. Smallest distance between a point and a rectangle

Created by: Alfonso Nieto-Castanon

Tags math, distance

5

161

51 – 83 of 83