The question you asked is actually a popular joke. The answer to the joke is "Why is six afraid of seven? Because seven eight (ate) nine." It's a play on words, using the numbers as homophones for "ate" and "eight." In this case, we don't need to use any specific method to answer the question since it's a joke and not a factual statement. But if you ever come across a question that requires a specific answer, you can try different methods to find the answer.
