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Three Real and One Fake - Maths
I have shamelessly stolen QM's new quiz format idea. Feel free to make similar quizzes (especially if you want to make an easier version). For each category, select the answer that does not belong.
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Last updated: January 18, 2021
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| First submitted | January 18, 2021 |
| Times taken | 246 |
| Average score | 40.0% | Report this quiz | Report |
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1. Prime numbers
91 = 7 × 13
97
91
19
79
2. Triangle centres (a triangle centre is a point that can be defined as the "centre" of the triangle by some metric)
"Epicentre" is a term used in seismology, in connection to earthquakes. It has nothing to do with triangles.
Circumcentre
Epicentre
Centroid
Orthocentre
3. Distributions in statistics
Conjunct distribution
Binomial distribution
Poisson distribution
Standard normal distribution
4. "Fundamental" theorems
Fundamental theorem of calculus
Fundamental theorem of algebra
Fundamental theorem of arithmetic
Fundamental theorem of geometry
5. Real numbers
There are many mathematical formalisations of the concept of infinity, but it is certainly not a real number.
0
∞
π
Googolplex
6. Things that can be represented by a symbol commonly found on a QWERTY keyboard
A limit is usually denoted by "lim"
Limit
Greater than
Factorial
Subtract
7. Constants named after individuals
There is a category of numbers called Fermat numbers, but it doesn't refer to a specific constant.
Graham's number
Skewes's number
Fermat's number
Euler's number
8. Mathematicians who made significant contributions to number theory
As a mathematician, Newton is notable mostly for inventing calculus.
Carl Friedrich Gauss
Isaac Newton
Pierre de Fermat
Leonhard Euler
9. Regular (Platonic) three-dimensional shapes
It is impossible to construct a regular enneahedron (which would be a nine-faced shape)
Tetrahedron
Cube
Enneahedron
Icosahedron
10. Square numbers
Square numbers can never end with the digit 2.
16384
0
4792
1234321
11. Things there are known to be infinitely many of
It is not known whether there are infinitely many perfect numbers or not.
Prime numbers
Perfect numbers
Digits in the full decimal expansion of π
Rational numbers between 0.499 and 0.501
12. Theories in maths
Galois theory
Girth theory
Group theory
Graph theory
13. Mathematicians of the 20th century
Riemann died in 1866.
Bernhard Riemann
Srinivasa Ramanujan
G.H. Hardy
Paul Erdős
14. Mathematical terminology relating to vegetation
As of yet, there is no mathematical object commonly called a "bud". Trees are found in graph theory, fields are found in group theory and most people have heard of square roots.
Field
Bud
Tree
Root
15. Trigonometric functions
There is no such thing as a bicosine. The arctangent is the inverse function of the tangent and the cosecant of an angle is equal to one divided by the sine of the angle.
Arctangent
Cosecant
Bicosine
Sine
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