List questions from decimal-expansion

Published on 15 Jul 2015 - 21:02

351

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Generalize multiples of $999...9$ using digits $(0,1,2)$

Published on 16 Jul 2015 - 6:00

208

Views

What is $\left\lfloor0.\overline{9}\right\rfloor$?

Published on 16 Jul 2015 - 20:58

85

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For any $n$ is there $n$ consecutive $0$ in the decimal expansion of $2^m$ for suitable $m \in \mathbb N$?

Published on 17 Jul 2015 - 19:22

1.3k

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Doubling sequences of the cyclic decimal parts of the fraction numbers

Published on 18 Jul 2015 - 12:19

64

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Are there more convenient ways of getting the number of digits of a positive integer?

Published on 22 Jul 2015 - 5:17

165

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using kronecker's theorem can we prove there's some power of two yielding a number whose initial digits equal my social security number?

Published on 26 Mar 2026 - 15:17

1k

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Can a number have an uncountably infinite amount of digits?

Published on 28 Jul 2015 - 22:49

6k

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How many $0$s does the number $30!$ have?

Published on 27 Mar 2026 - 14:10

771

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Digit sum equals 44 of a squared number

Published on 30 Jul 2015 - 9:45

82

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Sum involving the number of zeros of $k$

Published on 29 Mar 2026 - 12:05

324

Views

Difference between ${2\over 9}$ and ${22\over 99}$?

Published on 04 Aug 2015 - 4:36

1k

Views

last two digits of $14^{5532}$?

Published on 05 Aug 2015 - 13:41

880

Views

Converting decimal fractions to binary

Published on 06 Aug 2015 - 7:03

91

Views

Rational analogue of expansion to base b

Published on 07 Aug 2015 - 11:08

List Question

Upper bound of digit sum of powers

Generalize multiples of $999...9$ using digits $(0,1,2)$

What is $\left\lfloor0.\overline{9}\right\rfloor$?

For any $n$ is there $n$ consecutive $0$ in the decimal expansion of $2^m$ for suitable $m \in \mathbb N$?

Doubling sequences of the cyclic decimal parts of the fraction numbers

Are there more convenient ways of getting the number of digits of a positive integer?

using kronecker's theorem can we prove there's some power of two yielding a number whose initial digits equal my social security number?

Can a number have an uncountably infinite amount of digits?

How many $0$s does the number $30!$ have?

Digit sum equals 44 of a squared number

Sum involving the number of zeros of $k$

Difference between ${2\over 9}$ and ${22\over 99}$?

last two digits of $14^{5532}$?

Converting decimal fractions to binary

Rational analogue of expansion to base b

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