Shown below is an image that represents how cups should stack on top of each other in a stable manner. Among the given different types of cups, which of the cups CANNOT stack on itself in a stable manner?
In order to determine which cups cannot stack on themselves in a stable manner, consider the physical design of the cups. For stability, the base of the top cup should fit securely inside the rim of the bottom cup. If the top cup's base is larger than the bottom cup's rim, the cups will not stack stably.
Inspect each cup type to check this alignment:
The base of the cup is larger than its rim, preventing stable stacking.
This cup has a flared design where the rim is much wider than the base.
A similar flaring rim implies instability when stacking on itself.
The cup's design allows it to nest inside another with a matching rim and base size.
In conclusion, the first three cups:
,
, and
cannot stack on themselves stably.
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