This article is from the Puzzles FAQ, by Chris Cole chris@questrel.questrel.com and Matthew Daly mwdaly@pobox.com with numerous contributions by others.
All the items in the first list share a particular attribute. The second
list is of some items lacking the attribute.
Set#1
with: battery, key, yeast, bookmark
w/out: stapler, match, Rubik's cube, pill bottle
Set#2
with: Rubik's cube, chess set, electrical wiring, compass needle
w/out: clock, rope, tic-tac-toe, pencil sharpener
Set#3:
with: koosh, small intestine, Yorkshire Terrier, Christmas Tree
w/out: toothbrush, oak chair, soccer ball, icicle
Points to realize:
1.
There may be exceptions to any item on the list, for instance a particular
clock may share the properties of the 'with' list of problem two, BUT MOST
ORDINARY clocks do not. All the properties apply the vast majority of the
the items mentioned. Extraordinary exceptions should be ignored.
2.
Pay the most attention to the 'with' list. The 'without' list is only
present to eliminate various 'stupid' answers.
logic/attribute.s
The attribute puzzle format is a traditional format in math education.
It occurs in logic materials developed in the sixties by EDC in Boston,
with visual objects. Example:
these are gloops: A B C D E
these are not gloops: F G J L N
which of these are gloops? O P Q R S
Set#1
with: battery, key, yeast, bookmark
w/out: stapler, match, Rubik's cube, pill bottle
Needs to be placed inside something else when used for its usual purpose.
Set#2
with: Rubik's cube, chess set, electrical wiring, compass needle
w/out: clock, rope, tic-tac-toe, pencil sharpener
Uses color to distinguish between otherwise identical parts.
Set#3:
with: koosh, small intestine, Yorkshire Terrier, Christmas Tree
w/out: toothbrush, oak chair, soccer ball, icicle
Villiform.
 
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