Unions and Intersections Cannot Be Defined for More Than Two $A \cup B \cup C \text { and } A \cap B \cap C$

question 214

True/False

Unions and intersections cannot be defined for more than two sets, so that $A \cup B \cup C \text { and } A \cap B \cap C$ are meaningless.

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Definitions:

Retentive

Memory or functions in a control system that retain their value or state even after the system is powered down or rebooted.

Nonretentive

In PLC programming, a term referring to memory or data that is not retained after power loss.

Retentive Timer Reset

A function in PLC programming that allows a timer to retain its accumulated value even after a reset condition has been removed or power to the PLC has been cycled.

Timer Resets

The process of returning a timer to its initial state or set value in control systems or programming.