please be more specific. if you mean the number 15 and what it represents, than -15.
Many young people have crushes for someone of the opposite sex who is older and it is quite common and there is nothing wrong with it.
15+15+15+15=60
Fifteen feet is fifteen feet long.
"Fifteen" is an adjective when used to describe a noun, as in "fifteen people." It can also be a noun when referring to the number itself, as in "I will be there in fifteen."
Fifteen quadrillion. Fifteen quadrillion. Fifteen quadrillion.
Thirteen is spelled "thirteen" and fifteen is spelled "fifteen."
"Fifteen" in Welsh is "pymtheg."
My brother is fifteen.
Yes
fifteen = fünfzehn
Fifteen.
fifteen and sixty-two thousandths