What two numbers add up to 4521?

There are infinite combinations of two numbers that add up to 4521. Here are some examples using negative numbers:

-1 + 4522 = 4521
-2 + 4523 = 4521
-3 + 4524 = 4521
...

Here are some examples using two fractions that will add up to 4521:

4521/2 + 4521/2 = 4521
9042/3 + 4521/3 = 4521
13563/4 + 4521/4 = 4521
...

And here are some examples using two decimal numbers that will add up to 4521:

1.25 + 4519.75 = 4521
2.50 + 4518.5 = 4521
3.75 + 4517.25 = 4521
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 4521?", it may be more interesting to set some criteria to limit the result. We will set the follow criteria:

1) Only positive whole numbers can add up to 4521. (0 is not a positive or negative number and should not be included.)

2) Since a+b=29 is the same as b+a=29, we should only list it once.

Now, the answer to "What two numbers add up to 4521?" has 2260 answers:

1 + 4520 = 4521
2 + 4519 = 4521
3 + 4518 = 4521
.
.
2258 + 2263 = 4521
2259 + 2262 = 4521
2260 + 2261 = 4521

We have truncated the list above due to space, but you may be interested to know that we calculated the number of answers by dividing 4521 by 2 and then rounded down to the nearest whole number if necessary.

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