What is age 40 called?
A person between 30 and 39 is called a tricenarian. A person between 40 and 49 is called a quadragenarian. A person between 50 and 59 is called a quinquagenarian. A person between 60 and 69 is called a sexagenarian. A person between 70 and 79 is called a septuagenarian.
Accordingly, Do decades start at 0 or 1?
For a decade to begin, we must start with the year ending with 1 (2021) and finish with 10, or so far as chronology is concerned, a year ending in 0 (2030).
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