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Problems

1 – 35 of 35
Problem Title
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Difficulty

Problem 45412. Determina el número de cifras de un número

Created by: Lucía Honrubia Fernández

Tags math, number, digit

0

59

Problem 43967. Compound interest - number e

Created by: Daniel Pereira

Tags number, interest, e

2

38

Problem 44654. convert the number to binary format & count digits

Created by: Srishti Saha

Tags matlab 101, matlab, binary

0

53

Problem 2275. Palindrome numbers

Created by: Debopam

Tags palindrome, number

1

71

Problem 42380. Dice roll - opposite faces

Created by: goc3

Tags game, number, dice

1

96

Problem 45254. Tribonacci Sequence

Created by: Asif Newaz

Tags easy, number, sequence

1

44

Problem 57502. Determine if input is a Harshad number

Created by: Ricardo

Tags number, basic matlab

1

16

Problem 45191. generate nth pentatope number

Created by: Asif Newaz

Tags number, pentatope

4

65

Problem 3019. Calculator spelling - Letters to Numbers

Created by: goc3

Tags number, letter, calculator

1

51

Problem 2274. Find the square of the sum of the digits of a number

Created by: Debopam

Tags square, number, sum

1

156

Problem 3018. Calculator spelling - Numbers to Letters

Created by: goc3

Tags number, letter, calculator

3

54

Problem 45253. Pell numbers

Created by: Asif Newaz

Tags number, sequence, pell

2

70

Problem 2270. Bit calculation

Created by: Debopam

Tags binary, count, number

3

217

Problem 45246. Count digits

Created by: Asif Newaz

Tags count, number

3

29

Problem 45223. find nth even fibonacci number

Created by: Asif Newaz

Tags series, number, fibonacci

2

70

Problem 2283. Convert a number to its Roman representation

Created by: Debopam

Tags number, conversion, roman

1

33

Problem 54490. perfect square

Created by: CXD

Tags square, number

0

5

Problem 45267. Zero

Created by: Asif Newaz

Tags number, bit manipulation, and

1

23

Problem 3002. Not square-free number sequence

Created by: goc3

Tags square, number, integer

5

66

Problem 44360. Pentagonal Numbers

Created by: goc3

Tags series, number, sequence

12

657

Problem 45229. Bell Triangle

Created by: Asif Newaz

Tags number, matrix, Magic Numbers

2

49

Problem 3001. Sphenic number sequence

Created by: goc3

Tags prime, number, factor

2

68

Problem 43584. Find Pseudo-Cyclic Number

Created by: Jaeho Seol

Tags number, cyclic

5

33

Problem 45234. Calculating large fibonacci numbers

Created by: Martin C.

Tags number, fibonacci, large

2

26

Problem 45376. Maya - 02

Created by: Asif Newaz

Tags number, maya, numerals

1

9

Problem 45250. Be happy

Created by: Asif Newaz

Tags number, happy

3

32

Problem 45249. Frugal number

Created by: Asif Newaz

Tags number, frugal, economical

2

46

Problem 3003. Mobius function

Created by: goc3

Tags prime, number, factor

5

51

Problem 172. Test if a Number is a Palindrome without using any String Operations

Created by: @bmtran (Bryant Tran)

Tags palindrome, number, powers of 10

4

236

Problem 45343. How lucky r u ?

Created by: Asif Newaz

Tags number, sequence, lucky

2

13

Problem 45487. Check Digit - 02

Created by: Asif Newaz

Tags number, isbn

1

15

Problem 54089. Ramanujan's Number

Created by: Mehmet OZC

Tags number, ramanujan

0

9

Problem 45251. Last non-zero digit

Created by: Asif Newaz

Tags number, factorial

1

36

Problem 44306. Is it really a 5?

Created by: goc3

Tags regexp, string, number

7

311

Problem 44293. Write out numbers in words

Created by: Mehmet OZC

Tags number, letter, spell

1

10
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