ST Alpha - "Can you tell which of these math concepts are fake?" (Reading a Post)

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Can you tell which of these math concepts are fake?

Posted by GregW (aka not2fast) Apr 26 '19, 16:10

A list of 16 items were then given to students, who were asked to indicate their knowledge of
that particular mathematics concept on a five-point scale (ranging from ‘never heard of it’ to
‘know it well, understand the concept’). These constructs were:

1. Exponential function
2. Divisor
3. Quadratic function
4. Proper number
5. Linear equation
6. Vectors
7. Complex number
8. Rational number
9. Radicals
10. Subjunctive scaling
11. Polygon
12. Declarative fraction
13. Congruent figure
14. Cosine
15. Arithmetic mean
16. Probability

Responses:

.. - . Apr 26, 19:27
I see a couple that aren't real. Spoilers - Krusty Apr 26, 16:17 5
- Spoiler - Mop Apr 26, 16:35
- I'm not sure about another. -- (edited) - Krusty Apr 26, 16:18 3
  - spoilers - Tim Apr 26, 16:19 2
    - They kind of jumped out as I read down the list. Though the last one didn't. I caught that one on a second look through. -- nm - Krusty Apr 26, 16:22 1
      - Once I realized... - . Apr 26, 20:01

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Can you tell which of these math concepts are fake?

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