How many ways can you arrange 6 counters in equal rows and how do you know?

You can arrange 6 counters in equal rows in three ways: 1 row of 6, 2 rows of 3, and 3 rows of 2. This is determined by finding the divisors of 6, which are the numbers that can evenly divide 6, leading to these arrangements. Each arrangement corresponds to a different divisor: 1, 2, 3, and 6. Thus, the total number of arrangements is based on these divisors.