Step 10 Room 12

Room 12 has 13 doubles. The words 'to', 'to', and 'to'. or 3 'to's.
13 times 3 = 39.
The pictures point to 2 (2 fingers), The right has 2 and 1 finger (21) and the left has 'ate' (8).
Thus, we eliminate those three rooms.
Let's go to room 39.