Ambiguous: 1 10 11 20 21 22 26 27 Ambiguous execution (e.g. "draw a line around"): 4 5 7 8 9 12 14 Easy on the face of it: 2 3 13 15 16 17 18 25 Nonsense: 6 23 24 28 29 30 Difficult to execute (e.g. "draw this complicated set of shapes in a small space while under time pressure without making any mistake"): 19
That's just my quick assessment and might vary for you but I probably took more than 10 minutes just to think about this. At best (and I was generous) 7 out of 30 questions are clear.
And that is assuming the questions have been formulated in good faith, which is evidently not the case. Question 2 could mean just as well instruct you to draw a line under the whole expression "the last word" in that line, or a line under "the last word in this line", or just under "line". Who's to say?