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Question
Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1.
The Greeco-Roman era, when Greece and Rome ruled Egypt started in the year 330 BC and ended in the year 395 AD. How long did this era last?
Solution
Taking 1 BC as –1 and 1 AD as +1
Starting year = 330 BC = (–330) AD
Ending year = 395 AD
The era lasted for = 395 – (–330)
= 395 + 330
= 725 years
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