What two numbers add up to 3625?

There are infinite combinations of two numbers that add up to 3625. Here are some examples using negative numbers:

-1 + 3626 = 3625
-2 + 3627 = 3625
-3 + 3628 = 3625
...

Here are some examples using two fractions that will add up to 3625:

3625/2 + 3625/2 = 3625
7250/3 + 3625/3 = 3625
10875/4 + 3625/4 = 3625
...

And here are some examples using two decimal numbers that will add up to 3625:

1.25 + 3623.75 = 3625
2.50 + 3622.5 = 3625
3.75 + 3621.25 = 3625
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3625?", 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 3625. (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 3625?" has 1812 answers:

1 + 3624 = 3625
2 + 3623 = 3625
3 + 3622 = 3625
.
.
1810 + 1815 = 3625
1811 + 1814 = 3625
1812 + 1813 = 3625

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 3625 by 2 and then rounded down to the nearest whole number if necessary.

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