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Which international standard uses the 24-hour clock notation?

AISO 9001
BISO 4217
CISO 3166
DISO 8601
Answer & Solution
Correct answer: D. ISO 8601
1. The 24-hour notation hh:mm is specified in an international standard. 2. That standard is ISO 8601. 3. The others cover quality management, currency codes and country codes. _Source: Wikipedia, 24-hour clock, Lead section_
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