@Sebbel I'm not a native English speaker, and I made a typo. So what? It happens sometimes. Does that compromise the validity of my statement? Moreover, you insulted my English and then wrote "congrats to PhD," which isn't any better than my typo.
Need to use brackets more. E.g 56/8-4 Could be interpreted as 56/(8-4) or (56/8)-4. Obviously, it can only be one of those as the answer has to between 1 and 4, but by the time you've worked that out, you've wasted valuable seconds.
I've learnt in school that 56/8-4 always means (56/8)-4, because division/multiplication always gets executed before addition/substraction. Is this different in other countries?
According to PEMDAS, the denominator of a fraction is similar to parentheses, so you would do 8-4 to get 4, and the do 56/4=14. That isn't an option, but as previously stated, it wastes time. That is why I only got a 26.
This quiz could be mildly improved, in my opinion, by choosing either typewriter/programming conventions (+ - * / ^) or conventional math conventions (+ - × ÷ and superscripting the exponent, e.g. (6-4)²), but not mixing them.
It's something you'd get in school if you ever did some kind of "intro to programming" class, using (say) BASIC. I'd say it was common starting in the 1980s but they didn't do anything like it for my kid who was in elementary school in the 2010s; by that time it seems it became more common for computer education to just be using office applications and not include any programming component.
So I wonder if people who are old or young would be more likely to miss this convention. I notice that the iPhone calculator don't use it.
Likewise, I wonder if you'd get notation like 1.22e23 vs. 1.22 × 1023?
Congrats on the feature :)
(Yes, I have a PhD in Mathematics and yes, the statement that "Mathematics is not an opinion" is wrong.)
It's a very minor suggestion in a fun quiz!
So I wonder if people who are old or young would be more likely to miss this convention. I notice that the iPhone calculator don't use it.
Likewise, I wonder if you'd get notation like 1.22e23 vs. 1.22 × 1023?