What two numbers add up to 7678?

There are infinite combinations of two numbers that add up to 7678. Here are some examples using negative numbers:

-1 + 7679 = 7678
-2 + 7680 = 7678
-3 + 7681 = 7678
...

Here are some examples using two fractions that will add up to 7678:

7678/2 + 7678/2 = 7678
15356/3 + 7678/3 = 7678
23034/4 + 7678/4 = 7678
...

And here are some examples using two decimal numbers that will add up to 7678:

1.25 + 7676.75 = 7678
2.50 + 7675.5 = 7678
3.75 + 7674.25 = 7678
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 7678?", 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 7678. (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 7678?" has 3839 answers:

1 + 7677 = 7678
2 + 7676 = 7678
3 + 7675 = 7678
.
.
3837 + 3841 = 7678
3838 + 3840 = 7678
3839 + 3839 = 7678

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 7678 by 2 and then rounded down to the nearest whole number if necessary.

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