List questions from decimal-expansion

Published on 11 Aug 2011 - 23:33

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Proof that the real numbers are countable: Help with why this is wrong

Published on 30 Mar 2026 - 13:38

33.5k

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How can I prove that all rational numbers are either terminating decimal or repeating decimal numerals?

Published on 24 Feb 2026 - 6:49

667

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Are there any other numbers like $0.999\ldots$?

Published on 17 Sep 2011 - 22:45

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The last two digits of $9^{9^9}$

Published on 18 Sep 2011 - 6:51

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The number of ones in a binary representation of an integer

Published on 23 Sep 2011 - 18:44

388

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Upper and lower bounds in regards to 0.(9)

Published on 30 Nov 2011 - 11:54

1k

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Interesting pattern in the decimal expansion of $\frac1{243}$

Published on 12 Dec 2011 - 4:49

3.4k

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Do the digits of $\pi$ contain every possible finite-length digit sequence?

Published on 05 Jan 2012 - 11:49

3.7k

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How do I evalulate a fraction (example 1/998001) accurately to 100 decimal places and then display it in maxima/wxmaxima??

Published on 24 Jan 2012 - 20:18

38.5k

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What is special about the numbers 9801, 998001, 99980001 ..?

Published on 26 Jan 2012 - 17:28

1.4k

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How do we prove that $\lfloor0.999\cdots\rfloor = \lfloor 1 \rfloor$?

Published on 01 Feb 2012 - 7:26

905

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Calculate the 146th digit after the decimal point of $ \frac{1}{293} $

Published on 11 Feb 2012 - 13:39

8.5k

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Find The Last 3 digits of the number $2003^{2002^{2001}}$

Published on 13 Feb 2012 - 13:09

6.8k

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Derive a formula to find the number of trailing zeroes in $n!$

Published on 20 Feb 2012 - 19:21

List Question

Cyclic numbers are characterized by the reciprocals of full reptend primes?

Proof that the real numbers are countable: Help with why this is wrong

How can I prove that all rational numbers are either terminating decimal or repeating decimal numerals?

Are there any other numbers like $0.999\ldots$?

The last two digits of $9^{9^9}$

The number of ones in a binary representation of an integer

Upper and lower bounds in regards to 0.(9)

Interesting pattern in the decimal expansion of $\frac1{243}$

Do the digits of $\pi$ contain every possible finite-length digit sequence?

How do I evalulate a fraction (example 1/998001) accurately to 100 decimal places and then display it in maxima/wxmaxima??

What is special about the numbers 9801, 998001, 99980001 ..?

How do we prove that $\lfloor0.999\cdots\rfloor = \lfloor 1 \rfloor$?

Calculate the 146th digit after the decimal point of $ \frac{1}{293} $

Find The Last 3 digits of the number $2003^{2002^{2001}}$

Derive a formula to find the number of trailing zeroes in $n!$

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