A woman was born in 1975 and died in 1975. When she died, she was 22 years old. How is it possible?

The Solution

The answer is simple once you see it: 1975 is not a year—it is a location.

The woman was born and passed away inside a hospital room, a hotel room, or a building address numbered 1975.

By capitalizing on the way we naturally read numbers, the riddle tricks you into assuming a temporal constraint that doesn't actually exist in the text. When you re-read the sentence with a physical location in mind—"A woman was born in room 1975 and died in room 1975"—the math suddenly makes perfect sense. She lived a full 22 years, but her life's bookends just happened to take place under the same room number.

Why Our Brains Get Tricked

Psychologists refer to this phenomenon as a cognitive framework or a mental set. When we see a four-digit number starting with "19" or "20," our brain automatically categorizes it as a year to save cognitive energy. Riddles like this one are excellent exercises in lateral thinking because they force us to dismantle our automatic assumptions and look at ordinary data from an entirely new angle.

Did you solve it on your first try, or did you have to look for the answer?