What two numbers add up to 2421?

There are infinite combinations of two numbers that add up to 2421. Here are some examples using negative numbers:

-1 + 2422 = 2421
-2 + 2423 = 2421
-3 + 2424 = 2421
...

Here are some examples using two fractions that will add up to 2421:

2421/2 + 2421/2 = 2421
4842/3 + 2421/3 = 2421
7263/4 + 2421/4 = 2421
...

And here are some examples using two decimal numbers that will add up to 2421:

1.25 + 2419.75 = 2421
2.50 + 2418.5 = 2421
3.75 + 2417.25 = 2421
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 2421?", 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 2421. (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 2421?" has 1210 answers:

1 + 2420 = 2421
2 + 2419 = 2421
3 + 2418 = 2421
.
.
1208 + 1213 = 2421
1209 + 1212 = 2421
1210 + 1211 = 2421

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 2421 by 2 and then rounded down to the nearest whole number if necessary.

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