What two numbers add up to 7827?

There are infinite combinations of two numbers that add up to 7827. Here are some examples using negative numbers:

-1 + 7828 = 7827
-2 + 7829 = 7827
-3 + 7830 = 7827
...

Here are some examples using two fractions that will add up to 7827:

7827/2 + 7827/2 = 7827
15654/3 + 7827/3 = 7827
23481/4 + 7827/4 = 7827
...

And here are some examples using two decimal numbers that will add up to 7827:

1.25 + 7825.75 = 7827
2.50 + 7824.5 = 7827
3.75 + 7823.25 = 7827
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 7827?", 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 7827. (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 7827?" has 3913 answers:

1 + 7826 = 7827
2 + 7825 = 7827
3 + 7824 = 7827
.
.
3911 + 3916 = 7827
3912 + 3915 = 7827
3913 + 3914 = 7827

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 7827 by 2 and then rounded down to the nearest whole number if necessary.

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