My daughter asked the question, that I don't know the answer to.

Question:
In Y2K, the "K" stands for thousand, but where did the "K" come from? I know it's not a Roman Numeral, but what is it??

Hi Mike,

It comes from the Greek word for 1000: chilioi or "chilioi". The french used this word for thousand and spelled it kilo. You see it these days as a prefix for metric units such as kilogram (= 1000 grams) and kilometre (= 1000 metres)
   You need to be careful in using the letter K to stand for 1000 as the computer industry sometimes uses K to mean 2¹⁰ which is 1024.

Cheers
Chris and Harley