Rational doubt ( doubt in rational number)
133879
How do you calculate how many decimal places there are before the repeating digits, given a fraction that expands to a repeating decimal?
32848
Prove that the product of a non-zero rational and irrational number is irrational.
46561
How can I prove that all rational numbers are either terminating decimal or repeating decimal numerals?
157388
Doubt in a certain equation of a research paper
23406
How do I convince someone that $1+1=2$ may not necessarily be true?
100973
Check if this proof about real numbers with an irrational product is correct.
128634
Doubt related to a theorem in congruences of Chapter 5 of Apostol Introduction to analytic number theory
43268
How to prove that the set of rational numbers are countable?
66210
Prove that $z^n + 1/{z^n}$ is a rational number
122487
Degree of Rational Function
64885
Irrational and rational sequence proof
22408
Jutifying: irrational + rational = irrational
38851
To find the probability whether $X$ is rational
116568
Why is a repeating decimal a rational number?
19976
Riddle (simple arithmetic problem/illusion)
63409
If $x^2+ax+b=0$ has a rational root, show that it is in fact an integer
34315
Rational, integers and probability