Complex TeaserThese 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.
Which word in Group B can be added to Group A? Why?
Group A: complex, on, rat, stall
Group B: accord, gallop, new, tandem
AnswerEach word in Group A can be suffixed with the word "ion" to make a new unrelated word.
complex - complexion
on - onion
rat - ration
stall - stallion
accord - accordion
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