List questions from decimal-expansion

Published on 21 Oct 2012 - 13:49

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Why decimal expansion of $e$ has two copies of $1828$

Published on 21 Oct 2012 - 17:53

63

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Basic arithmetic operations formalized with decimal expansions

Published on 26 Oct 2012 - 12:34

1.4k

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Finite representation in the binary $\implies$ finite representation in the decimal system

Published on 23 Nov 2012 - 15:46

227

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floating point binary arithmetic

Published on 23 Nov 2012 - 16:06

28

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Calculating the yearly interest?

Published on 27 Nov 2012 - 15:02

4.2k

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Hint for: Prove any terminating decimal can be represented as a rational number

Published on 08 Dec 2012 - 6:10

231

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Square root of an integer has only even digits

Published on 01 Apr 2026 - 12:46

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Find the number of digits, $D$, in the decimal expansion of the large number $N=4^{4^{4^{4}}}$

Published on 27 Mar 2026 - 12:28

295

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Find $N$, in the decimal expansion of the large number $N=4^{4^{4^4}}$

Published on 27 Mar 2026 - 12:28

455

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Is there a sequence of primes whose decimal representations are initial segments of each other?

Published on 31 Dec 2012 - 10:33

86

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Explicit Fractional Basis Expansion

Published on 02 Jan 2013 - 8:17

3.8k

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Characterization of non-unique decimal expansions

Published on 05 Jan 2013 - 19:54

2.6k

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About 0.999... = 1

Published on 29 Mar 2026 - 15:53

9.5k

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The last digit of $2^{2006}$

Published on 23 Jan 2013 - 9:23

List Question

Reverse Engineer from digits sum

Why decimal expansion of $e$ has two copies of $1828$

Basic arithmetic operations formalized with decimal expansions

Finite representation in the binary $\implies$ finite representation in the decimal system

floating point binary arithmetic

Calculating the yearly interest?

Hint for: Prove any terminating decimal can be represented as a rational number

Square root of an integer has only even digits

Find the number of digits, $D$, in the decimal expansion of the large number $N=4^{4^{4^{4}}}$

Find $N$, in the decimal expansion of the large number $N=4^{4^{4^4}}$

Is there a sequence of primes whose decimal representations are initial segments of each other?

Explicit Fractional Basis Expansion

Characterization of non-unique decimal expansions

About 0.999... = 1

The last digit of $2^{2006}$

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