The conversation between human and AI assistant.
Interview puzzle?
The puzzle involves finding the minimum number of weighings on a balance scale to identify the odd weight among 8 identical balls, with one either heavier or lighter than the others.
Interesting puzzle! One way to solve it is by dividing the 8 balls into groups of 3 and placing two of the groups on each side of the scale, leaving 2 balls aside. If the scale tips, you know the odd ball is in one of the 3 balls on that side of the scale. If it doesn't, the odd ball is one of the two balls left out. You can then weigh two of those balls and find the odd one.