GOLD COINS
By actor4life
@actor4life (336)
United States
August 30, 2006 10:57am CST
You have 9 gold coins. All 9 coins look exactly the same but one coin is a fake and is either lighter or heavier than the other 8 coins. You have a scale - balance type with 2 trays - but can only load it twice. How do you find the fake gold coin?
1 response
@prasad1961 (5597)
• India
18 Oct 06
Its simple. we can balance 4 coins a piece in each tray and make balance both trays equally. Separate the add one tray contains fake. again balance it with 2 coins a piece in each tray and can be assessed which coin is fake.
