A set of 17 coins contains five 35g coins and twelve 30g coins. Using a balance scale at most four times find at least two of the 35g coins.
(In reply to
One weigh or another by Leming)
Your solution seems to be in error.
You wrote in Step 1 that:
"Misbalanced: There are 3 Heavy coins on the heavy side, and either 1 or 2 on the light side. (Step 2B)"
Might there not be 5 on the heavy side and 0 on the light? Or 4 on the heavy side and 0 or 1 on the light? Or, as you said, 3 on the heavy side and either 1 or 2 on the light?
re: One weigh or another
