I think they've gone too far with these games!! This is craziness.
That grey seven on level 2 is a total joke. And 24? I just click randomly on some green stuff for that one.
Highest level balcony on top left of screen, look for a brown rectangle instead of balcony post
Slightly under number 1 on patterned area - sorry not a good explanation - just move your mouse south from number 1 and click!
From the star at the top, go to the right to the balcony - it is just underneath balcony in shadow
Click 2 thirds of the way up the screen, 1/4 of the way across