I am trying to create an any\_strings? method that takes an array and returns true if there is a string in the array. For example:

```
a = [ 1, 2, 3, "string" ]
any_strings?(a)
#=> true

b = [ 1, 2, 3, 4 ]
any_strings?(b)
#=> false

```

Define any\_strings? as follows:

```
def any_strings?(a)
end

```

Am I supposed to use the is\_a? method, I am quite confused with how exactly you use 2 block methods