Here's a test of your observation and memory skills.
Write down your answers to check 'em at the end.
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30-28 Mensa is calling, sherlock
25-27 Not too shabby
20-24 You could do better
16-19 McDonald's is calling (would you like fries w/ that?)
15 or below Damn! Being blind wouldn't affect you one bit!
OK How did you do?