Help me in solving ARRY5V2 problem

My issue

/ 4 in code 9
why / 4 ?

My code

#include <bits/stdc++.h>
using namespace std;

int main() {

  int Num[6] = {10, 20, 30, 40, 50, 60};
  cout << sizeof(Num) / 4;

  return 0;
}

Learning course: Learn C++
Problem Link: CodeChef: Practical coding for everyone

@shehabshahin11
Because size of int is 4 bytes .