13 Stripes in the United States Flag
This is easy - and I'm not American ! 13 stars on the United States Flag !
It means 13 stripes in (or on) the United States Flag.
hey buddy you got the question wrong its- what is 13 "S" in the USF? * the answer is _13 Stripes in the United States Flag that is assuming we are both talking about the same thing.
13 Stripes on the American Flag
13 Stripes on a Stars and Stripes (US flag)