Question: 10 bag gold coins?

by Gold Marketer on December 26, 2009

{ 2 comments… read them below or add one }

1 J C December 28, 2009 at 7:32 pm

One coin from bag one,
Two coins from bag 2 etc.
No coins from bag 10.
The units digit of the resultant weighing will identify the bag.

2 Long C December 28, 2009 at 7:30 pm

You put all of the bags on the scales, then take them off one at a time. As soon as the weight drops by 11g instead of 10g, then you know you’ve just picked up the bag you want.

Leave a Comment

Previous post:

Next post: