Show that multiplication of two numbers can be done in any order (commutative) and division of one number by another cannot

1. Choose the array with the same no. of counters: 3x2
2. Choose the array with the same no. of counters: 2x4
3. Choose the array with the same no. of counters: 3x4
4. Choose the array with the same no. of counters: 5x3