In front of you are 3 chests:
Chest A has been labelled with "100 gold coins",
Chest B has been labelled with "50 gold and 50 silver coins",
Chest C has been labelled with "100 silver coins".
You are told that all of the labels are incorrectly placed, as they describe the contents of another chest. To help you determine which is the chest which contains "100 gold coins", you are allowed to randomly pick a coin from any chest,
Which chest should you pick a coin from?