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Qn #1995
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You are given two (unmarked) containers of capacity 9 liters and 4 liters, and a huge tank of water.
Need is to get a measure of exactly 6 liters of water.
A move is either filling a container completely or emptying a container (either fully or partly).
The smallest number of moves needed to do this task is
Qn #1896
Qn #1664
There are 8 balls looking alike, seven of which have equal weight and one is slightly heavier. The
weighing balance is of unlimited capacity. Using this balance, the minimum number of weighings
required to identify the heavier ball is: