Range in Ruby

Ranges as Conditions:

score = 45

    case score
       when 0..40
        puts "Fail"
       when 41..60
        puts "Pass"
       when 61..70
        puts "Pass with Merit"
       when 71..100
        puts "Pass with Distinction"
       else "Invalid Score"
    end

Ranges as Intervals:

if ((1..10) === 5)
      puts "5 lies in (1..10)"
    end

    if (('a'..'j') === 'c')
      puts "c lies in ('a'..'j')"
    end

    if (('a'..'j') === 'z')
      puts "z lies in ('a'..'j')"
    else
      puts "z Doesn't lie in ('a'..'j')"
    end