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 June 28th, 2017, 04:16 AM #1 Senior Member   Joined: Nov 2011 Posts: 205 Thanks: 2 zero Is zero rational number?
 June 28th, 2017, 04:47 AM #2 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,327 Thanks: 2451 Math Focus: Mainly analysis and algebra Yes.
 June 28th, 2017, 04:57 AM #3 Senior Member   Joined: Nov 2011 Posts: 205 Thanks: 2 It's possible to say that zero is rational because it's a whole number and rational number is a fraction or a whole number. Right? Last edited by skipjack; June 28th, 2017 at 05:06 AM.
 June 28th, 2017, 05:10 AM #4 Global Moderator   Joined: Dec 2006 Posts: 19,168 Thanks: 1640 A rational number is a number that can be expressed as a fraction, p/q, where p and q are integers and q is non-zero.
 June 28th, 2017, 05:11 AM #5 Senior Member   Joined: Nov 2011 Posts: 205 Thanks: 2 so in whole number q is equal to 1. Right?
 June 28th, 2017, 08:40 AM #6 Global Moderator   Joined: Dec 2006 Posts: 19,168 Thanks: 1640 Not necessarily, as (-6)/(-2) = 3, which is a whole number. Note that some people use the term "whole number" to mean a non-negative integer, and that a rational number can be negative.
 June 28th, 2017, 11:07 AM #7 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,821 Thanks: 1047 Math Focus: Elementary mathematics and beyond $0=\frac0r$, where $r$ is any real number other than $0$.

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