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Mathematics General Knowledge

Can you answer these general knowledge questions about math?
Type using numerals when possible
Quiz by WolfCam
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First submittedFebruary 14, 2018
Last updatedSeptember 7, 2018
Times taken13,117
Rating4.31
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 / 19 guessed
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Hint
Answer
What do you call a polygon with nine sides?
Nonagon
What is 126 in Roman numerals?
CXXVI
What is the term for the spot (0,0) on a graph?
Origin
If a cube has sides of length 4, what is its volume?
64
What does the "M" stand for in y=mx+b?
Slope
Whose formula for right triangles states a2 + b2 = c2 ?
Pythagoras
What are the first five digits of pi?
3.1415
Cos stands for Cosine. What does Tan stand for?
Tangent
What number is a one followed by 100 zeroes?
Googol
What mathematician is the namesake of the number "e"?
Leonhard Euler
What is the total of a triangle's internal angles?
180
Pi, e, and √2 can all be described as what?
Irrational Numbers
How many centimeters are in a kilometer?
100,000
What is notable about the numbers 7, 11, 17, and 43?
They are Prime
What is the name of the sequence that begins 1, 1, 2, 3, 5, 8?
Fibonacci Sequence
What is the sum of the numbers 1 through 100?
5050
How many seconds are in an hour?
3600
If a right triangle has a height of 50 and a base of 50, what is its area?
1250
What numbering system uses only ones and zeroes?
Binary
+17
level 75
Aug 1, 2018
Nice balance of questions :) A couple of comments about "y=mx+b": 1. it might be be clearer to ask "what does the m represent", since "stand for" sounds (to me, anyway) like the answer should begin with m. 2. Perhaps accept "gradient" as well as "slope".
+8
level 71
Aug 3, 2018
And not to be nitpicky, but, well, to be nitpicky: the m in the hint should also be small, not capitalized. Great quiz though! Nice to have one for us math fans who are not quick with arithmetic.
+3
level 55
Aug 1, 2018
Oh, and could you accept enneagon for the 9 sided polygon too? I get that it isn't as commonly used, but it is correct...
+6
level 34
Aug 1, 2018
Please make "gradient" allowed for "slope". Thank you :]
+2
level 36
Aug 2, 2018
And rate of change!
+1
level 48
Jan 23, 2019
and angular coefficient maybe
+15
level 71
Aug 1, 2018
The good thing about the metric system is you can just start typing zeroes when asked how many centimeters are in a kilometer :-).
+1
level 66
Aug 1, 2018
Disgraceful!
+3
level 72
Aug 2, 2018
Easier than how many cubic inches in a hogshead.
+1
level 36
Aug 2, 2018
So then, remove the question, Cardian Sine!
+1
level 62
Aug 28, 2018
A shameful display!
+1
level 61
Aug 30, 2018
My car gets forty rods to the hog's head, and that's the way I likes it!
+3
level 71
Aug 3, 2018
I totally did that ;-)
+2
level 56
Aug 28, 2018
That's exactly what I did. I'm sure I could have figured it out but not necessary.
+1
level 72
Oct 7, 2018
Seeing as it's a hundred (centi) times a thousand (kilo), yeah you probably could've come up with a hundred thousand.
+2
level 34
Aug 1, 2018
can you change it so typos such as fibonnaci are accepted?
+1
level 67
Aug 1, 2018
The average score on this quiz is 14, hhhmmm!!! I suspect a lot of people use Mr. Google as they are doing the quiz, or else the only people who have done it are Maths graduates/teachers.
+8
level 33
Aug 1, 2018
It's Dr Google not Mr Google
+8
level 52
Aug 1, 2018
No maths grad here and got 17/19. I didn't see anything beyond GCSE-level maths or general knowledge. (Apart from the quiz thumbnail image!)
Guessed "Euclid" for "e" number and missed the 1 thru 100 summation (despite previously seeing comments in other quizzes on the Gauss series formula: sum = n(n+1)/2 with n=100 returns 5050 :o)
+2
level 51
Aug 2, 2018
18/19 here... and I also guessed Euclid :)
+1
level 25
Aug 28, 2018
It's Euler, folks. I used google but it didn't help. 16/19 though
+3
level 55
Aug 28, 2018
It wasn't that difficult a quiz...
+1
level 65
Aug 28, 2018
The only ones that were a bit tricky really were the e one, which I only knew because it was part of a question on Trivial Warfare recently, and the sum of the numbers 1 through 100. I didn't know the formula for that, but I reasoned the 1+100=101, 2+99=101, 3+98=101, etc., so I multiplied 101*50.
+1
level 72
Oct 7, 2018
I've always liked when they give credit to people for figuring out some little pattern like that and millions of junior high school kids have on their own.
+2
level 48
Sep 4, 2018
Not really, nothing here is beyond high-school level math.
+1
level 72
Oct 7, 2018
Why only 14? That's less than 75%, a pretty crappy test result in school. We didn't touch any complex math.
+1
level 48
Aug 1, 2018
"What is the total of a triangle's internal angles"... should also accept 2pi or 2*pi
+5
level 67
Aug 2, 2018
Actually, it's 1*pi.
+6
level 36
Aug 2, 2018
Which is why 180 is incorrect, since it should be 180 DEGREES. Please fix (and use the fancy round superscript character too) while you're at it. Thanks!
+4
level 57
Aug 10, 2018
You mean this beast:

180º
+1
level 72
Oct 7, 2018
Roar
+4
level 57
Aug 6, 2018
Should technically specify degrees. π is the answer in radians, which are what should be assumed if no unit is given.
+3
level 62
Aug 2, 2018
Please accept "base 2" instead of binary. I don't know if I am right, although Wikipedia suggests I am, but when I think of a numbering system, I think of base 2, but when I think of the results of the system, I think of a binary number. In any event,base-2 is certainly a correct answer to the question you asked.
+2
level ∞
Aug 2, 2018
Okay
+5
level 77
Aug 2, 2018
d'oh! I read "WHOSE formula" as "WHAT formula" and kept typing in pythagorean theorem over and over.
+1
level 64
Aug 4, 2018
Seconds and hours are purely physical definitions. Thus this question has nothing to do with mathematics. While the same holds for the "meter", the relation between "centi" and "kilo" indeed relates to mathematics. Just said. Further, with the non-metric system used in parts of the world, it appears to be an accident that all countries use the same units of time. ;-)
+1
level 79
Aug 28, 2018
I'm curious how you think someone would answer the question "How many seconds are in an hour?" without using math. True, you could just know it off the top of your head, but I think most people would say, "Okay, 60 minutes in an hour and 60 seconds in a minute, so the answer is 60 * 60."
+1
level 55
Aug 28, 2018
I think s/he means that you can just as easily ask 'how many players are on a football team' or 'how many objects do you see in this image' and it would be the same sort of question i.e. arbitrary counting using definitions set by people as opposed to pure unadulterated unbiased 'mathematics'. Although I do agree with you, most people will use mental maths to solve this, so I'd say it's still fitting.
+1
level 79
Aug 28, 2018
I suppose if you wanted to make it more obviously mathy (mathsy?) you could change it to "seconds in a day" or "seconds in a week" or something like that, because there are some people who just have the number of seconds in an hour memorized. Don't do "minutes in a year," though, because then it's definitely a music question, not a math question.
+1
level 66
Aug 29, 2018
Also the name of the number that's a 1 followed by 100 zeroes isn't exactly "math" knowledge
+1
level 37
Aug 30, 2018
Applied mathematics might not be very pure, but the quiz doesn't claim to be pure. And neither do I.
+1
level 70
Aug 28, 2018
I enjoyed figuring out the question about the sum of the numbers from 1 to 100. However, I find it odd that there is another featured quiz today with the exact same question.
+1
level 25
Aug 28, 2018
Exactly. I really feel you.
+1
level 33
Aug 28, 2018
wasted 2 minutes trying to calculate 1+2+3+4...+100, because I ended up with 4950
+1
level 61
Aug 30, 2018
To find out the sum of all the numbers in any set that increases at regular intervals (eg., each number is 1 higher than the one before it, or each number is 5 higher than the number before it), just add the lowest and highest numbers, then divide by 2. Take your answer, and multiply it by the number of terms in the set. So, in this case, there are 100 numbers (or "terms"), increasing by 1 each time. Add the high and the low: 1+100=101. Divide by 2: 50.5 (this answer will also be the average of all the numbers in the set). Then multiply that number (50.5) by the number of terms in the set (i.e., 100). So, 50.5 x 100 = 5050.
+1
level 72
Oct 7, 2018
Or...if you're starting at 1, just multiply by the next # (101) and then divide it by 2....
+1
level 71
Aug 28, 2018
Irrational, not imaginary!!! Doh - mixing up 1 and 2
+1
level 49
Aug 28, 2018
Special thanks to Tool for the assist on Fibonacci.
+1
level 62
Aug 28, 2018
100%!!! YES!
+1
level 24
Aug 29, 2018
Please accept Pythagorean theorem as an answer for: Whose formula for right triangles states a2 + b2 = c2 ?
+2
level 61
Aug 30, 2018
The question clearly asks "*whose* formula..." It obviously wants the person, not the theorem.
+2
level 58
Aug 30, 2018
For those who keep saying 'm' means gradient, what country is that in? Because for me, a "gradient" (∇) is an operator whose result is a vector comprised of partial derivatives of the input function. But maybe that's just because I'm an engineer....
+1
level 72
Aug 30, 2018
So just a one dimensional version of what you speak, then? (Or commonly known as just "grad")
+1
level 48
Sep 4, 2018
Well I assume it is "m" in America because of this quiz and it's also "m" here in Australia, meaning its most likely the same in the UK.
+1
level 57
Sep 10, 2018
It's called gradient in the UK. I don't really understand that definition so it probably is because you're an engineer. They're different meanings of the word "gradient".
+1
level 52
Sep 12, 2018
Either way it still works, since the gradient of a line would just be a one-dimensional vector of the slope itself (since the slope is the partial derivative).
+1
level 25
Sep 1, 2018
spent too long trying to type "orgin" and being confused why it wouldn't work
+1
level 45
Dec 31, 2018
Easy. Finished with 2:33 remaining. Guess this shows how much I love math.