Why is `27 ** (1.0/3.0)` different from `27 ** (1/3)`?

Question

Please let me know if this is correct way to get the cubic root.

I can't understand why

27 ** (1.0/3.0) #=> 3 

is different from

27 ** (1/3) #=> 1

Answer 1

1.0 / 3.0 # => 0.3333333333333333
27 ** 0.333 # => 2.9967059728946346

1 / 3 # => 0
27 ** 0 # => 1

The second is an example of integer division. How many threes are there in one? Zero. Any number in power 0 is 1.