If You Guessed Every Answer on Korea's CSAT, What Score Would You Get?
Guess your way through all 45 questions on the Korean-language section of Korea's CSAT and the math says you'll land near 20 points, with a standard deviation of 6.07. But the odds of a flat zero sit in the exact same statistical neighborhood as the odds of scoring 47 or higher. The probability of a perfect 100 is 3.52×10⁻³² — 8,158 times the age of the universe, even with 8 billion people guessing once a second. The twist: that terrible probability comes from question count, not difficulty, until real perfect-scorer data reveals the actual culprit is a handful of killer questions. Run the same math on the redesigned ACT and the odds get even more absurd.
