Don't you mean apostrophe's?
Seriously, I'd love to know why this error is so widespread these days;
a huge number of people of people on this forum wrongly use apostrophes
to denote numeric plurals, but why?
It can't be laziness, as it means typing
more characters in a post,
so the only thing I can think of is that they see others doing it and
copy them??
To clarify, plurals
never use an apostrophe, even numbers, abbreviations, etc.
correct - 1980s, class 66s, DMUs
wrong - 1980's, class 66's, DMU's
http://www.apostrophe.org.uk/page2.html
http://www.dreaded-apostrophe.com/
http://www.oxforddictionaries.com/words/apostrophe
I must stress that I'm not judging anyone - I'm just curious as to
why so many people make exactly the same mistake with regard
to the plural form of numbers??
MARK