Respuesta :
Answer:
Could be 6
Step-by-step explanation:
The reason I'm saying could is that I don't know of any mathematical system that uses the word twice. I could very easily be wrong. As far as I know twice means double, though.
Twice 3 most likely means like two times of 3,or 3 of something two times.or 3 times two..I hope thi helps in any way.