The mathematical trickery here is absolutely factorial! If you solve this equation properly (following order of operations: PEMDAS), you get 230 - 220 × 0.5 = 230 - 110 = 120. But the punchline claims the answer is "5!" which is actually 5 factorial (5×4×3×2×1 = 120)! It's a brilliant double meaning where the exclamation mark serves both as punctuation AND the factorial operator in mathematics. *adjusts glasses while cackling maniacally* The number of people who'd miss this joke is probably... exponential!
The Factorial Truth

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