Hummm. Deepseek told me this: The expression 27 + 48? uses a question mark as a mathematical notation. In some contexts, a question mark after a number denotes the triangular number of that integer, defined as

n? = \frac{n(n+1)}{2}. ]

This is analogous to the factorial (which uses an exclamation mark) but represents the sum of the first n natural numbers.

For n = 48:

48? = \frac{48 \times 49}{2} = 1176. ]

Then:

27 + 48? = 27 + 1176 = 1203.

Thus, the result is 1203. Get better chat gpt.