Count array numbers in multidimensional array

Count array numbers in multidimensional array

I have an array named
$results['picks]
the vardump of array is:
var_dump($results['picks']
array(1) {
[0]=>
string(2) "55"
}
array(1) {
[0]=>
string(2) "69"
}
array(1) {
[0]=>
string(2) "71"
}
array(1) {
[0]=>
string(2) "72"
}
array(1) {
[0]=>
string(2) "73"
}
How to count all arrays inside? results are 5 so i need to get that number
i was trying with
count();
but i get this result:
1
1
1
1
1