
arithmetic - What is the correct answer to this infamously …
Mar 24, 2021 · The 'ambiguity' here comes from the fact that we use parenthesis as a multiplication operator as well. We can agree that $2(1+2) = 2 \times (1+2)$
arithmetic - Is multiplication not just repeated addition ...
Sep 14, 2011 · As to multiplication, both addition and multiplication are just some operations that map two elements to one element. I think you can define any operations on a set to be addition or multiplication. As long as the operations respect the laws you get from arithmetic because of the "Principle of Permanence".
arithmetic - Why is $\frac{987654321}{123456789} = 8.0000000729 ...
May 20, 2013 · Many years ago, I noticed that $987654321/123456789 = 8.0000000729\\ldots$. I sent it in to Martin Gardner at Scientific American and he published it in his column!!! My life has gone downhill si...
arithmetic - How do you distinguish the difference between a …
Oct 20, 2012 · arithmetic; Share. Cite. Follow edited Oct 20, 2012 at 10:36. Américo Tavares. 39.1k 13 13 gold badges ...
arithmetic - How to manually calculate cube roots - Mathematics …
Jan 28, 2021 · arithmetic; Share. Cite. Follow edited Jan 28, 2021 at 14:33. Dietrich Burde. 138k 8 8 gold badges 96 96 ...
arithmetic - 0.5 times 0.5 equals 0.25, but how does this work with ...
Feb 28, 2022 · First, let's do 3 times 0.5, which we'll treat as 0.5 + 0.5 + 0.5. But instead of thinking of it happening all at once, imagine we take 3 seconds, and in the first second we move from 0 to 0.5, in the second second we move from 0.5 to 1.0, and in the third second we move from 1.0 to 1.5, and then we're finished and see our answer is 1.5.
Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange
$\cong$ is used to show a congruency between two mathematical expressions, which could be geometrical, topological, and when using modulo arithmetic you can get different numbers that are congruent, e.g., $5 \text{ mod } 3 \cong 11 \text{ mod } 3$ (although this is also written as $\equiv$). In LaTeX it is coded as \cong.
arithmetic - How do I explain 2 to the power of zero equals 1 to a ...
By no-changer I refer, of course, to the unit element. That this can be added/multiplied to anything without resulting in a change should be accepted. I am unsure wether this approach helps understanding the hierarchy of arithmetic operators or wether you need the hierarchy for understanding the approach.
arithmetic - What is zero times infinity? - Mathematics Stack …
arithmetic; infinity; Share. Cite. Follow edited Mar 7, 2014 at 9:48. Willie Wong. 74.7k 13 13 gold badges ...
arithmetic - Count number of values between two numbers
Dec 9, 2010 · I am finding with some formulas for my web application. I need a formula that counts the number of values between two number, e.g. there are four numbers (3,4,5,6) between 2 and 7