What two numbers add up to 3780?

There are infinite combinations of two numbers that add up to 3780. Here are some examples using negative numbers:

-1 + 3781 = 3780
-2 + 3782 = 3780
-3 + 3783 = 3780
...

Here are some examples using two fractions that will add up to 3780:

3780/2 + 3780/2 = 3780
7560/3 + 3780/3 = 3780
11340/4 + 3780/4 = 3780
...

And here are some examples using two decimal numbers that will add up to 3780:

1.25 + 3778.75 = 3780
2.50 + 3777.5 = 3780
3.75 + 3776.25 = 3780
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 3780?", 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 3780. (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 3780?" has 1890 answers:

1 + 3779 = 3780
2 + 3778 = 3780
3 + 3777 = 3780
.
.
1888 + 1892 = 3780
1889 + 1891 = 3780
1890 + 1890 = 3780

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 3780 by 2 and then rounded down to the nearest whole number if necessary.

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