1. Let's state the problem: What happens when a number is raised to the power of 0? 2. The rule for exponents states that for any nonzero number $a$, $a^0 = 1$. 3. This is because of the properties of exponents. For example, consider $a^m \div a^m = a^{m-m} = a^0$. 4. But dividing the same number by itself gives 1, so $a^0 = 1$. 5. Important note: $0^0$ is undefined and is not considered in this rule. 6. Therefore, any nonzero number raised to the zero power equals 1.