Integer « Number « Ruby

1.Integer and Float
2.An integer with the kind_of? method (this method is from the Object class).
3.Integer is an instance of the Fixnum class, which inherits the Integer class.
4.Change x from an integer to a floating point with the to_f method from the Fixnum class
5.difference between 'puts x / y' and 'puts x.to_f / y.to_f' integers, using to_i:
7.puts 120.chr
8.Basic Math Operations for integer
9.List the modules which Integer class is from

10.General Predicates
11.Integer predicates
12.Comparison Methods