Q:

Google search of: "rand between -1 and 1 ruby" gives 0 results

When I search Google to give me different methods to generate a random number between -1 and 1 using:
rand between -1 and 1 ruby
it gives me did not find any documents. Anyone know why? Seems like a basic search query to me.

A:

The minus sign operator in a Google search is saying "exclude", so you're saying "exclude 1 and include 1", so zero results.  

Similarly, if you want to exclude a word entirely, you can add a dash
  before it—like justin bieber -sucks if you want sites that only speak
  of Justin Bieber in a positive light.

-LifeHacker
As to the question you're searching for, check this out...
-How to get a random number in Ruby

