Ruby: test returns ArgumentError : Greeting Stackoverflow fellow people!
I'm learning Ruby and as one of the intro exercises I'm meant to type 
"test" and receive "nil" 

However I receive this instead:ArgumentError: wrong number of arguments (0 for 2..3)
	from (irb):15:in `test'
	from (irb):15
	from /usr/bin/irb:12:in `<main>'

Does anyone know if I need to fix something, because I can't seem to find anything on this anywhere I've looked so far.

Thanks in advance! 
 