We have a puzzle to solve: question mark 4 plus 18 equals 8 factorial. First, let's calculate what 8 factorial equals. 8 factorial means 8 times 7 times 6 times 5 times 4 times 3 times 2 times 1, which equals 40320.
Now we substitute 8 factorial equals 40320 into our equation. This gives us question mark 4 plus 18 equals 40320. To solve for question mark 4, we subtract 18 from 40320, which equals 40302. Since question mark 4 represents the number 40302, the question mark must be 4.
Let's verify our solution. If question mark equals 4, we need to check our work. The number question mark 4 actually represents 40302, where the question mark is the first digit. From 40302, we can see the first digit is 4. Therefore, question mark equals 4, and exclamation mark equals 40320.
To summarize what we've learned: We solved the puzzle by first calculating 8 factorial equals 40320. Then we substituted this value and found that question mark 4 equals 40302. Since this represents a number where the question mark is the first digit, we determined that question mark equals 4 and exclamation mark equals 40320.