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DrWatson · 70-79, M
Here is the explanation: Read "DEC" as an abbreviation for "decimal", and read "OCT" as an abbreviation for "octal".
In the decimal enumeration system, we group by tens. In the octal system, we group by eights. (Octal is useful to computer scientists, although nowadays they are more likely to use hexadecimal -- base 16.)
So 31 OCT means "3 eights and 1". But "25 DEC" means "2 tens and 5". They are equal.
In the decimal enumeration system, we group by tens. In the octal system, we group by eights. (Octal is useful to computer scientists, although nowadays they are more likely to use hexadecimal -- base 16.)
So 31 OCT means "3 eights and 1". But "25 DEC" means "2 tens and 5". They are equal.
