### Mathematics - Other - Explanation of posting

For the problem presented #247154 The example that was given was great but am a little confuse and one of my classmates ask me the following question to help understand the answer. Can you clarify the question. Okay, you have totally confused me now. You say, "Totally we have 4 + 2 + 2 + 1 = 9 letters n = 9 But there a