What two numbers add up to 3621?

There are infinite combinations of two numbers that add up to 3621. Here are some examples using negative numbers:

-1 + 3622 = 3621
-2 + 3623 = 3621
-3 + 3624 = 3621
...

Here are some examples using two fractions that will add up to 3621:

3621/2 + 3621/2 = 3621
7242/3 + 3621/3 = 3621
10863/4 + 3621/4 = 3621
...

And here are some examples using two decimal numbers that will add up to 3621:

1.25 + 3619.75 = 3621
2.50 + 3618.5 = 3621
3.75 + 3617.25 = 3621
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3621?", 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 3621. (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 3621?" has 1810 answers:

1 + 3620 = 3621
2 + 3619 = 3621
3 + 3618 = 3621
.
.
1808 + 1813 = 3621
1809 + 1812 = 3621
1810 + 1811 = 3621

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 3621 by 2 and then rounded down to the nearest whole number if necessary.

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