List questions from rational-numbers

Published on 29 Mar 2026 - 14:01

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In every interval there is a rational and an irrational number.

Published on 10 Jan 2013 - 9:33

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Rational multiples of $\pi/2$ whose sines are also rational

Published on 10 Jan 2013 - 12:46

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Any positive rational number can be expressed in one and only one way in the form ...

Published on 14 Jan 2013 - 3:55

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How does one show that the set of rationals is topologically disconnected?

Published on 18 Jan 2013 - 12:57

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Must be rational number

Published on 07 Apr 2026 - 12:26

288

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Will we get all real numbers if we add all limits?

Published on 07 Apr 2026 - 12:30

633

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How can I explain $0.999\ldots=1$?

Published on 02 Apr 2026 - 1:05

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Is a non-repeating and non-terminating decimal always an irrational?

Published on 29 Mar 2026 - 22:34

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Field containing all square roots of rational numbers

Published on 07 Apr 2026 - 12:31

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Prove $x \in \mathbb{Q}$ and $y \notin \mathbb{Q} \implies (x + y) \notin \mathbb{Q}$

Published on 05 Feb 2013 - 5:10

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H0w t0 prove that periodic decimal numbers are rational? $a_1...a_k(b_1b_2..b_l)={m \over n}$

Published on 05 Feb 2013 - 6:25

813

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Relation on rational numbers that defines a total order

Published on 10 Feb 2013 - 0:28

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Is sin(x) necessarily irrational where x is rational?

Published on 04 Apr 2026 - 0:14

126

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Two reals with rational quotient, Z-span the integers

Published on 21 Feb 2013 - 8:34

List Question

Bézout's identity in higher dimensions?

In every interval there is a rational and an irrational number.

Rational multiples of $\pi/2$ whose sines are also rational

Any positive rational number can be expressed in one and only one way in the form ...

How does one show that the set of rationals is topologically disconnected?

Must be rational number

Will we get all real numbers if we add all limits?

How can I explain $0.999\ldots=1$?

Is a non-repeating and non-terminating decimal always an irrational?

Field containing all square roots of rational numbers

Prove $x \in \mathbb{Q}$ and $y \notin \mathbb{Q} \implies (x + y) \notin \mathbb{Q}$

H0w t0 prove that periodic decimal numbers are rational? $a_1...a_k(b_1b_2..b_l)={m \over n}$

Relation on rational numbers that defines a total order

Is sin(x) necessarily irrational where x is rational?

Two reals with rational quotient, Z-span the integers

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