I found this question while doing an official Mensa practice test.
Please fill in the bottom right blank window with one of the 6 possible answers depicted below the horizontal line.
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$\begingroup$ are there any rules? $\endgroup$ – Jasen Jul 31 '16 at 1:48
I think it is
the right one in the top row.
Because:
there are three basic shapes on the 9 images: the circle (top row middle), the triangle (second row middle), and the U-shaped thingy (second row right).
They all appear in three forms:
1. the basic variation
2. a version in which the basic shapes right and left sides are swapped
- two facing half circles
- the rotated K
- and the upside-down T
3. and a variation in which their right half is rotated 180 degrees
- the CC-looking stuff
- the bottom middle one
- and... the one that is missing, so it must be a half U followed by the otherhalf of the half U, rotated upside down
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1$\begingroup$ One hypothetical problem would be that the first row, first square could be the "base" design for the U-shaped thingy, and then the U itself would be the second version, then the answer would be a 180° rotation of your selected answer...but that's not a choice. $\endgroup$ – Dan Russell Jul 28 '16 at 17:23
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$\begingroup$ not convinced, seems the
((
sshould be))
why prefer the triangle over the "dead"K
$\endgroup$ – Jasen Jul 31 '16 at 1:27 -
$\begingroup$ the CC is fine, I think, please check it once more. My idea does not work with the the dead K chosen as a basic shape, but works with the triangle, that's why I chose that one. I've been designing Raven-like puzzles for standardized IQ test questions, and I'm aware of the rules behind their solution. This one seems like a question with the idea of 'distribution of 3 values', but the placement of the tiles is a little bit strange indeed. I can accept if you think my idea is a stretch. [to be continued] $\endgroup$ – elias Jul 31 '16 at 5:01
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$\begingroup$ [cont.] Being part of an official Mensa test suggests that this is a high quality matrix question, which should 100 percently fit to the mentioned rules. When you were filling the test, was this the only 'strange' question? Are you convinced this is a standard, official question from Raven? How was the overall quality of the test? $\endgroup$ – elias Jul 31 '16 at 5:03
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$\begingroup$ @elias this question is part of a practice test which can be found on the official mensa - Greece website. $\endgroup$ – Alexandros Jul 31 '16 at 19:57
An answer that's at least plausible is
There are three groups of shapes, the circle thingies, the triangle thingies, and the squarish thingies.
To go from the first-row shape to the second-row shape, you
halve the picture vertically, then swap the halves.
To go from the first-row shape to the third-row shape, you
halve the picture vertically, flip the left half vertically, the right half horizontally, then flip the whole thing horizontally.
There does not seem to be a clear and/or simple answer, but I believe that it is
option 3, since the right second horizontal row contains part of a shape. If you cut the right half and turn it 180 degrees, and keep the other half preserved, you will get option 3.
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$\begingroup$ Weight never mind I have a better explanation. This works for every shape between the 2nd and 3 rd row. Swap the sides, horizontally flip the right side and vertically flip the left side. The answer is solution 3. $\endgroup$ – Nick Jul 30 '16 at 19:43
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$\begingroup$ only works given that "horizontally flip" is ambiguous is it
b
tod
orb
top
you seem to be using the term both ways. $\endgroup$ – Jasen Jul 31 '16 at 1:38