What two numbers add up to 4980?

There are infinite combinations of two numbers that add up to 4980. Here are some examples using negative numbers:

-1 + 4981 = 4980
-2 + 4982 = 4980
-3 + 4983 = 4980
...

Here are some examples using two fractions that will add up to 4980:

4980/2 + 4980/2 = 4980
9960/3 + 4980/3 = 4980
14940/4 + 4980/4 = 4980
...

And here are some examples using two decimal numbers that will add up to 4980:

1.25 + 4978.75 = 4980
2.50 + 4977.5 = 4980
3.75 + 4976.25 = 4980
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 4980?", 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 4980. (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 4980?" has 2490 answers:

1 + 4979 = 4980
2 + 4978 = 4980
3 + 4977 = 4980
.
.
2488 + 2492 = 4980
2489 + 2491 = 4980
2490 + 2490 = 4980

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 4980 by 2 and then rounded down to the nearest whole number if necessary.

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