What two numbers add up to 3907?

There are infinite combinations of two numbers that add up to 3907. Here are some examples using negative numbers:

-1 + 3908 = 3907
-2 + 3909 = 3907
-3 + 3910 = 3907
...

Here are some examples using two fractions that will add up to 3907:

3907/2 + 3907/2 = 3907
7814/3 + 3907/3 = 3907
11721/4 + 3907/4 = 3907
...

And here are some examples using two decimal numbers that will add up to 3907:

1.25 + 3905.75 = 3907
2.50 + 3904.5 = 3907
3.75 + 3903.25 = 3907
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3907?", 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 3907. (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 3907?" has 1953 answers:

1 + 3906 = 3907
2 + 3905 = 3907
3 + 3904 = 3907
.
.
1951 + 1956 = 3907
1952 + 1955 = 3907
1953 + 1954 = 3907

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 3907 by 2 and then rounded down to the nearest whole number if necessary.

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What two numbers add up to 3908?
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