#666 · Puzzles · Weighings
The counterfeit stack
There are stacks of coins. Real coins weigh g; one entire stack is fake at g each. You take coin from stack , from stack , …, from stack , and they weigh g together. Which stack is fake?
Stuck? A gentle nudge
Your answer
Loading the math keyboard…
Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.