Question

When does the fraction $142/2.54$ ever repeat?

score 52 · Answer 1 · 2021-06-07 18:38:45

52

Views

When does the fraction $142/2.54$ ever repeat?

Published on 07 Jun 2021 - 18:38

score 43 · Answer 2 · 2021-06-08 01:19:38

43

Views

Does the decimal expansion of a (fractional) number always contain less digits than its binary expansion?

Published on 08 Jun 2021 - 1:19

score 71 · Answer 3 · 2026-03-26 11:18:02

71

Views

On the decimal expansion of $\prod_{k=1}^{\infty} \sum_{\ell =1}^{k} \frac{9}{10^\ell}$

Published on 26 Mar 2026 - 11:18

score 89 · Answer 4 · 2021-06-13 08:01:16

89

Views

Why sum of digits in even base have such property?

Published on 13 Jun 2021 - 8:01

score 221 · Answer 5 · 2026-02-25 12:18:26

221

Views

Why do we use $...$ with irrational numbers?

Published on 25 Feb 2026 - 12:18

score 279 · Answer 6 · 2021-06-13 18:23:56

279

Views

Divisibility criteria for 3 in sum of power of sum of digits

Published on 13 Jun 2021 - 18:23

score 136 · Answer 7 · 2021-06-21 11:49:51

136

Views

Number of $n$ digit integers where digits appear an odd number of times

Published on 21 Jun 2021 - 11:49

score 67 · Answer 8 · 2021-06-29 14:56:37

67

Views

There is no three consecutive integers with same Parity of sum of its digits

Published on 29 Jun 2021 - 14:56

score 176 · Answer 9 · 2021-06-30 21:06:43

176

Views

How do I use the Bellard Formula to extract a specific digit of pi?

Published on 30 Jun 2021 - 21:06

score 84 · Answer 10 · 2026-03-26 21:09:31

84

Views

Are there any primitive examples besides 56,65 where the sum of a number's cube and its digital reverse's cubes is square?

Published on 26 Mar 2026 - 21:09

score 450 · Answer 11 · 2021-07-20 12:25:01

450

Views

What is the mistake in balancing the equation in a demonstration that $0.999\ldots=1$?

Published on 20 Jul 2021 - 12:25

score 161 · Answer 12 · 2021-07-20 15:44:26

161

Views

How to formally define decimal truncation?

Published on 20 Jul 2021 - 15:44

score 64 · Answer 13 · 2021-07-25 13:59:39

64

Views

Transforming a 4-digit number to produce $7793$

Published on 25 Jul 2021 - 13:59

score 166 · Answer 14 · 2021-07-26 10:15:09

166

Views

Baby Rudin Archimedean Property

Published on 26 Jul 2021 - 10:15

score 150 · Answer 15 · 2021-07-26 18:55:11

150

Views

Prove $10^{P(n)/2}+1$ is divisible by $n$

Published on 26 Jul 2021 - 18:55

List Question

When does the fraction $142/2.54$ ever repeat?

Does the decimal expansion of a (fractional) number always contain less digits than its binary expansion?

On the decimal expansion of $\prod_{k=1}^{\infty} \sum_{\ell =1}^{k} \frac{9}{10^\ell}$

Why sum of digits in even base have such property?

Why do we use $...$ with irrational numbers?

Divisibility criteria for 3 in sum of power of sum of digits

Number of $n$ digit integers where digits appear an odd number of times

There is no three consecutive integers with same Parity of sum of its digits

How do I use the Bellard Formula to extract a specific digit of pi?

Are there any primitive examples besides 56,65 where the sum of a number's cube and its digital reverse's cubes is square?

What is the mistake in balancing the equation in a demonstration that $0.999\ldots=1$?

How to formally define decimal truncation?

Transforming a 4-digit number to produce $7793$

Baby Rudin Archimedean Property

Prove $10^{P(n)/2}+1$ is divisible by $n$

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