>>90711711 could be out of place because it's smaller than the rest.
3 could be out because it's a different colour than the rest.
4 could be out because it does not have a border like the rest.
5 could be out because it's a circle unlike the other squares.
Obviously it can't be any of those so the meaning of "odd one out" has to be interpreted inversed.
2 is the odd one out because 1, 2, 4 and 5 could be considered out, where as 2 cannot; thus 2 possesses a unique attribute in that it cannot be the odd one out, thus 2 is the "odd one out".
>t. IQ >180 and standardized testing company founder (I used to write IQ test questions) 