Answer:
i think i know 3?
Step-by-step explanation:
well at first i thought that it was half because half of 12 is 6 and half of 6 is 3
and so half of 10 is five, but since it wasn't correct, i looked closely and look at this
TWELVE= 6 letters
SIX= 3 letters
and so they have the answer correct, and it want half, because it was the amount of letters the number had.
so....
TEN= 3 letters
so maybe that's the answer