What two numbers add up to 6560?

There are infinite combinations of two numbers that add up to 6560. Here are some examples using negative numbers:

-1 + 6561 = 6560
-2 + 6562 = 6560
-3 + 6563 = 6560
...

Here are some examples using two fractions that will add up to 6560:

6560/2 + 6560/2 = 6560
13120/3 + 6560/3 = 6560
19680/4 + 6560/4 = 6560
...

And here are some examples using two decimal numbers that will add up to 6560:

1.25 + 6558.75 = 6560
2.50 + 6557.5 = 6560
3.75 + 6556.25 = 6560
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 6560?", 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 6560. (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 6560?" has 3280 answers:

1 + 6559 = 6560
2 + 6558 = 6560
3 + 6557 = 6560
.
.
3278 + 3282 = 6560
3279 + 3281 = 6560
3280 + 3280 = 6560

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 6560 by 2 and then rounded down to the nearest whole number if necessary.

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