In Questions Determine Whether the Binary Relation Is:
(1) Reflexive $$\text { The relation } R \text { on } \mathcal { R } \text { where } a R b \text { means } a - b \in \mathcal { Z } \text {. }$$

question 16

Short Answer

In questions determine whether the binary relation is:
(1) reflexive, (2) symmetric, (3) antisymmetric, (4) transitive.
- $$\text { The relation } R \text { on } \mathcal { R } \text { where } a R b \text { means } a - b \in \mathcal { Z } \text {. }$$

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Definitions:

Echoic

Pertaining to or characterized by echo; in psychology, it refers to the sensory memory of auditory stimuli.

Procedural

Relating to the process or method of performing a task, often detailing the step-by-step instructions necessary to complete it successfully.

Sensory Memory

It is the most fleeting aspect of memory, enabling the retention of sensory impressions even after the initial stimuli are no longer present.

Permanent Storehouse

A metaphorical term often used to describe long-term memory, where information is stored indefinitely.