What two numbers add up to 3813?

There are infinite combinations of two numbers that add up to 3813. Here are some examples using negative numbers:

-1 + 3814 = 3813
-2 + 3815 = 3813
-3 + 3816 = 3813
...

Here are some examples using two fractions that will add up to 3813:

3813/2 + 3813/2 = 3813
7626/3 + 3813/3 = 3813
11439/4 + 3813/4 = 3813
...

And here are some examples using two decimal numbers that will add up to 3813:

1.25 + 3811.75 = 3813
2.50 + 3810.5 = 3813
3.75 + 3809.25 = 3813
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3813?", 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 3813. (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 3813?" has 1906 answers:

1 + 3812 = 3813
2 + 3811 = 3813
3 + 3810 = 3813
.
.
1904 + 1909 = 3813
1905 + 1908 = 3813
1906 + 1907 = 3813

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 3813 by 2 and then rounded down to the nearest whole number if necessary.

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