The Fish Tank Puzzle

There are 10 fish in my fish tank. Suddenly, two of them drown, three of them swim away, and four of them die. How many fish are left in the tank?

10 fish.

Explanation:

Fish can’t drown, so the two that “drown” are still in the tank.
Fish in a tank can’t swim away, so the three that “swim away” are also still in the tank.
Even if four fish die, their bodies remain in the tank.

42

19