What two numbers add up to 6645?

There are infinite combinations of two numbers that add up to 6645. Here are some examples using negative numbers:

-1 + 6646 = 6645
-2 + 6647 = 6645
-3 + 6648 = 6645
...

Here are some examples using two fractions that will add up to 6645:

6645/2 + 6645/2 = 6645
13290/3 + 6645/3 = 6645
19935/4 + 6645/4 = 6645
...

And here are some examples using two decimal numbers that will add up to 6645:

1.25 + 6643.75 = 6645
2.50 + 6642.5 = 6645
3.75 + 6641.25 = 6645
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 6645?", 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 6645. (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 6645?" has 3322 answers:

1 + 6644 = 6645
2 + 6643 = 6645
3 + 6642 = 6645
.
.
3320 + 3325 = 6645
3321 + 3324 = 6645
3322 + 3323 = 6645

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 6645 by 2 and then rounded down to the nearest whole number if necessary.

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