It means "I have 15 years."
But you have to be careful, n and ñ are different letters in Spanish, in context we all presume you mean año pronounced "anyo" which means year, but ano pronounced "ano" means anus (backside).
So, tengo 15 años means I have 15 years, or more usual in English for age we use the verb to be, I am 15 years old.
Tengo 15 anos literally means I have 15 anuses (backsides).
when you say tengo dieciseis anos, you are saying the English equivalent of i am 16 years old. however, if u wanted to translate it literally, this would mean i have 16 years
Tengo doce años means: I am 12 years old.
i have 42 years
If the sentence is a question it means "Are you 100 years old?" and if its a statement it means "It is 100 years old".
"I am 30 years old and I'm from Paris".
I am 19 years old.
anos is already in spanish. Maybe you mean anos in english. It means years.
i have 42 years
"Tengo once años" means "I am eleven years old" in English.
If the sentence is a question it means "Are you 100 years old?" and if its a statement it means "It is 100 years old".
"Tengo treinta y cuatro años" means "I am thirty-four years old" in Spanish.
"I am 30 years old and I'm from Paris".
I am 19 years old.
It means I am eleven years old. Tengo- I have. Once- Eleven. Anos- years.
"I am nine years old, and you?"
if you replace anos with años then you say i am thirteen years old if not you are saying i have 13 anuses no joke.
if you mean reply you would say : Yo tengo # anos.
"Yo tengo dieciocho años" means "I am eighteen years old" in Spanish.
I am 12 years old and my birthday is July 28.