What two numbers add up to 3605?

There are infinite combinations of two numbers that add up to 3605. Here are some examples using negative numbers:

-1 + 3606 = 3605
-2 + 3607 = 3605
-3 + 3608 = 3605
...

Here are some examples using two fractions that will add up to 3605:

3605/2 + 3605/2 = 3605
7210/3 + 3605/3 = 3605
10815/4 + 3605/4 = 3605
...

And here are some examples using two decimal numbers that will add up to 3605:

1.25 + 3603.75 = 3605
2.50 + 3602.5 = 3605
3.75 + 3601.25 = 3605
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3605?", 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 3605. (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 3605?" has 1802 answers:

1 + 3604 = 3605
2 + 3603 = 3605
3 + 3602 = 3605
.
.
1800 + 1805 = 3605
1801 + 1804 = 3605
1802 + 1803 = 3605

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 3605 by 2 and then rounded down to the nearest whole number if necessary.

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