What two numbers add up to 8008?

There are infinite combinations of two numbers that add up to 8008. Here are some examples using negative numbers:

-1 + 8009 = 8008
-2 + 8010 = 8008
-3 + 8011 = 8008
...

Here are some examples using two fractions that will add up to 8008:

8008/2 + 8008/2 = 8008
16016/3 + 8008/3 = 8008
24024/4 + 8008/4 = 8008
...

And here are some examples using two decimal numbers that will add up to 8008:

1.25 + 8006.75 = 8008
2.50 + 8005.5 = 8008
3.75 + 8004.25 = 8008
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 8008?", 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 8008. (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 8008?" has 4004 answers:

1 + 8007 = 8008
2 + 8006 = 8008
3 + 8005 = 8008
.
.
4002 + 4006 = 8008
4003 + 4005 = 8008
4004 + 4004 = 8008

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 8008 by 2 and then rounded down to the nearest whole number if necessary.

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