Which of the above images is the odd one out?
closed as too broad by dcfyj, Matt, Gareth McCaughan♦, elias, Techidiot Mar 2 '17 at 18:38
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
A: the only one with a non-connected inverse
B: the only one with less vertical than horizontal matches
C: the only one with no matches in the lower half
D: the only one with a non-prime number of matches
E: the only one which cannot be formed into a valid digit with moving at most two matches while staying inside the same 7-segment area
A is the odd one out, because it is the only configuration of matches that can be made into the letter it's labelled with by adding a single match.
B is the odd one out, because it's the only one that includes "all three" horizontal matches.
C is the odd one out, because it's the only one that doesn't form a letter.
D is the odd one out, because it's the only one for which the number of matches isn't prime.
E is the odd one out, because it's the only one that forms a number in both Arabic (7) and Roman (L) numerals.
E. All others have a middle match.
C. Simple : All others form a letter.