# Raven's progressive matrices test [duplicate]

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.

• are there any rules? – 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

• 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. – Dan Russell Jul 28 '16 at 17:23
• not convinced, seems the (( sshould be )) why prefer the triangle over the "dead" K – Jasen Jul 31 '16 at 1:27
• 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] – elias Jul 31 '16 at 5:01
• [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? – elias Jul 31 '16 at 5:03
• @elias this question is part of a practice test which can be found on the official mensa - Greece website. – 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.

[

# Why

A =
B =
If you rotate B, the line goes up.
If you rotate A, the line goes bottom.
Remove the triangle from A and add line in A in B.
It becomes the solution.

• Please explain why you think this is the answer. – f'' Jul 28 '16 at 16:58
• I did it, Can anyone hide my box? – Ronronner Jul 28 '16 at 17:32
• I don't understand why you think A and B are related. – Jasen Jul 31 '16 at 1:30

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.

• 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. – Nick Jul 30 '16 at 19:43
• only works given that "horizontally flip" is ambiguous is it b to d or b to p you seem to be using the term both ways. – Jasen Jul 31 '16 at 1:38