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/sci/ - Science & Math


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11793477 No.11793477 [Reply] [Original]

What is the answer here? This is a question from the entry-level civil servant exam. The rest of the IQ test-style questions make more sense. The source is https://twitter.com/jeeebediah/status/1270917940888719360..

/wsr/ thread: >>>/wsr/836923

>> No.11794392

>>11793477
b?

>> No.11794421

>>11794392
actually it's probably d

>> No.11794433

>>11793477
A

>> No.11794438

>>11794433
I changed my mind, its d.
1,1,2
1,2,3
2,3,5
Fibonacci
Number of axes of symmetry

>> No.11794479

It's definitely about the symmetries. I didn't get as far as figuring out that it had to be D, with five axes of symmetry, before the other anon posted that, but that would make sense. I didn't see why it couldn't be A, with four though. 1, 2, 3, 4 is still a pattern. I guess you're supposed to know it's not that because the smiley face isn't totally asymmetrical, and in this case you might expect the correct answer to have three axes of symmetry, but there is no such answer choice.

>> No.11794545

>>11794438
>>11794479
wouldn't the rhombus in the center have 4 axis of symmetry if it was cut diagonally?

>> No.11794578

>>11794545
No, it wouldn't. It's not a square.

>> No.11794649

>>11793477
B

>> No.11794752

>>11793477
The answer is most likely D for the reasons outlined here >>11794438

It's an odd question, however, as it relies on assumed knowledge of the sequence. I think expecting people to recognise simple sequences within shapes makes sense, but Fibonacci within the context of axes of symmetry is really pushing it.

>> No.11794845

>>11794752
>it relies on assumed knowledge of the sequence
It doesn't really, since the sequence is self-justifying. Even if you've never heard of the name Fibonacci before, once you've figured out the pattern of the symmetry axes, you are left to choose between either a sequence that goes "1, 1, 2, 3, 4" (with no explanation for the double 1) or the correct "1, 1, 2, 3, 5," where each number is plainly the sum of the previous two. It does seem like a rather cruel extra step though. I was once professionally administered an IQ test as part of a full battery of neuropsychological testing, and achieved the maximum score determinable by the short version of the test, and I probably would have gone with A on this question. There's no way I would have taken the time to work out that second layer of analysis in a real testing situation, I would see the "1, 2, 3, 4" and not think about the extra 1. The only "hint" the question seems to provide is that there is no answer choice corresponding to "3," which would have been an attractive answer as it would make the entire grid "symmetrical," and thinking through that possibility would force you to recognize the extra 1 in the corner (which could lead you to realize that "4" can't be right). By omitting a "3" answer, the problem clues you in that "3" is not right, and the correct pattern must be something else.

>> No.11794922

>>11794578
It's a rotated rectangle

>> No.11794927

>>11794922
No it's not. Please, son, just look at the shape. And a rectangle that is longer in one axis than the other also only has two axes of symmetry (like the shape in the bottom left corner).

>> No.11794941

It's D. Look at the symmetry.

>> No.11794945

Holy shit some of you guys are elite retards. Leave this board forever. Please don't reproduce.

>> No.11794951

>>11794927
I see a rotated rectangle

>> No.11794958

>>11794845
A simpler way to look at it is to simply notice that the number of axes of symmetry in the third column of each row is the sum of those of the two first rows.

>> No.11794972
File: 51 KB, 548x222, Rhomb.png [View same] [iqdb] [saucenao] [google]
11794972

>>11794958
Yes, that amounts to the same thing. And, looking at the puzzle again, that's probably a more intuitive, one-step way to recognize the solution.

>>11794951
Do I really have to do this?