Lottery Game?

Question

Can anyone guess the age of my cousin if she is between the ages of 1-20. I am bored so I am giving up 10 points to the first person who gets it.

Answer 1

17

Answer 2

16

Answer 3

either 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20...

you never said anything about number of gussess...