Please solve a task. We have 5 similar coins, 3 of those are real and weight the same, while 2 are fake. 1 fake coin is lighter and the other is heavier than the real ones. How many weighting operations we will need to find at least one real coin?
- 2
- 3
- p
- 3
- at least 3, maximum 4
- 2
- 1
- Your problem statement is flawed. I can discover both coins by weighing each of 4 coins. If I discover the 'odd' coins in the first three, I can stop then.
- 2
- Don't know