# Problems

1 – 50 of 65
 Problem Title Likes Solvers Difficulty

#### Problem 42920. Find the inverse permutation

Created by: Jens Kjærgaard Boldsen

Tags math, vector

0

50

#### Problem 2377. Area of a disk

Created by: Shravankumar P

2

270

Created by: G K

1

27

#### Problem 42785. Choose group with people

Created by: Pritom Kumar Mondal

Tags math, easy

0

18

#### Problem 42788. Rearrange string

Created by: Pritom Kumar Mondal

Tags math, easy, counting

1

30

#### Problem 44143. Percentage profit:6: Cumulative Interest

Created by: H M Dipu Kabir

Tags math

1

13

#### Problem 271. N-Cards Problem

Created by: @bmtran (Bryant Tran)

Tags math, loop

6

144

#### Problem 42646. Matrix FUN

Created by: Manish Joshi

3

140

#### Problem 202. the fly, the train, the second train, and their Zeno's paradox

Created by: Alfonso Nieto-Castanon

Tags math

2

61

#### Problem 44530. Are you more familiar with iteration methods or Linear Algebra? Let's see together.

Created by: Riccardo Dessì

Tags math, basic, matlab

1

22

#### Problem 46034. Construct the Seidel-Entringer-Arnold triangle

Created by: ChrisR

0

11

Created by: G K

3

21

#### Problem 42820. jumping astronauts

Created by: Thomas Bischoff

Tags math

0

18

#### Problem 1977. Power of n ?

Created by: Pavan Toraty

Tags math

1

96

#### Problem 204. yet another flying fly (YAFF)

Created by: Alfonso Nieto-Castanon

Tags math

0

22

#### Problem 45976. Evaluate the Struve function

Created by: ChrisR

2

15

#### Problem 282. Circle and Quadratic

Created by: Matt Fig

Tags math

0

11

#### Problem 1630. ~~~~~~~ WAVE ~~~~~~~~~

Created by: Suman Saha

Tags math, matrix, fun

15

333

#### Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

109

21899

#### Problem 189. Sum all integers from 1 to 2^n

Created by: Dimitris Kaliakmanis

65

11353

#### Problem 895. Generate N equally spaced intervals between -L and L

Created by: @bmtran (Bryant Tran)

5

717

#### Problem 1488. Generate binary combinations for a given number of bit(s)

Created by: Suman Saha

2

87

#### Problem 43301. Calculate inverse matrix in m by n matrix

Created by: Jang geun Choi

5

79

#### Problem 45982. Evaluate the incomplete elliptic integrals

Created by: ChrisR

0

11

5

447

#### Problem 3005. Recursive Standard Deviation

Created by: Zikobrelli

Tags math

2

15

#### Problem 44142. Percentage profit:5: Cumulative Interest

Created by: H M Dipu Kabir

Tags math

1

19

Created by: Ted

2

163

#### Problem 1463. Pascal's Matrix

Created by: Yaroslav

4

208

#### Problem 1550. Can I make a right triangle ?

Created by: Marek Kuklis

Tags math, matlab

0

57

#### Problem 42781. How many ways to write a number

Created by: Pritom Kumar Mondal

1

19

#### Problem 42825. solid of revolution

Created by: Thomas Bischoff

Tags math

1

32

Created by: Ted

1

14

#### Problem 203. fly fly away

Created by: Alfonso Nieto-Castanon

Tags math

3

65

#### Problem 43235. Calculate geostrophic current

Created by: Jang geun Choi

Tags math, easy, matlab

5

35

#### Problem 43290. Calculate numerical integration.

Created by: Jang geun Choi

Tags math, easy, matlab

6

53

#### Problem 44749. Exponents in Factorials(hard)

Created by: li haitao

Tags math

1

8

#### Problem 525. Mersenne Primes

Created by: Drew Weymouth

4

427

#### Problem 43650. Church Encoding

Created by: Kensuke Fujita

3

21

Created by: Ken

Tags math

4

45

#### Problem 45363. Exponentiation

Created by: Asif Newaz

Tags math, basic, modulo

1

19

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

Created by: Cody Team

85

15889

#### Problem 392. Clock Hand Angle 1

Created by: @bmtran (Bryant Tran)

9

161

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

Created by: Freddy

1

81

Created by: G K

Tags math

1

94

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

Created by: Alfonso Nieto-Castanon

2

30

#### Problem 49788. Carmichael Number

Created by: Gifari Zulkarnaen

3

9

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

Created by: Jihye Sofia Seo

1

42

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

Tags math, triangle

21

1901

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

Created by: Alex Feinman

1

176

1 – 50 of 65