Determining if a variable is within range?

Question

I need to write a loop that does something like:

if i (1..10)
  do thing 1
elsif i (11..20)
  do thing 2
elsif i (21..30)
  do thing 3
etc...

Answer 1

For Strings:

(["GRACE", "WEEKLY", "DAILY5"]).include?("GRACE")

#=>true