L S ZThese brain teasers rely on your ability to recognize groups of common attributes. For each of these puzzles you'll need to figure out why the words or letters are grouped as they are. Sometimes you will be asked to pick the odd-one-out or to place a new word into the correct group.
What do the following letters have in common and which other letter should be added?
L; Z; S; I; and T
C; O; Y; and D
AnswerThey are the letters represented in the game of Tetris (Braingle version).
The letter that should be added is O.
The Purple and Blue "L" shapes;
the Green "Z" shape;
the Light Blue "S" shape;
the Orange "I" shape;
the Yellow "T" shape;
and the Red "O" shape
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