The RAND function returns numbers from the interval [0,1), and if you need to generate numbers from another interval, you should use the following formula: =RAND() * (bâa) + a. This will return random numbers from the interval [a,b) - greater than or equal to a, and less than b.
At the time, 5.4 was made available as a beta release alongside the stable 5.3.4 release. Now that 5.4 has become the latest stable Unity release, it seems the company intends to keep the program going a beta version of Unity 5.5 is slated to debut in the near future. source.
For the time being Unity Web Player support can be re-enabled by pasting this into your chrome address bar: This should take you directly to the correct Chrome setting. Click to enable it and restart your browser. If this doesn't work you may have to empty your browser cache as well. This isn't a dangerous thing to do, it just enables NPAPI-support as it was before you upgraded to Chrome version 42. Now the Unity Web Player should work just like before.