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How many GUIDs (1-99)
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A globally unique identifier (GUID, /'gw?d/ or /'gu??d/) is a unique reference number used as an identifier in computer software. The term "GUID" typically refers to various implementations of the universally unique identifier (UUID) standard.

GUIDs are usually stored as 128-bit values, and are commonly displayed as 32 hexadecimal digits with groups separated by hyphens, such as {21EC2020-3AEA-4069-A2DD-08002B30309D}.