What two numbers add up to 881?

There are infinite combinations of two numbers that add up to 881. Here are some examples using negative numbers:

-1 + 882 = 881
-2 + 883 = 881
-3 + 884 = 881
...

Here are some examples using two fractions that will add up to 881:

881/2 + 881/2 = 881
1762/3 + 881/3 = 881
2643/4 + 881/4 = 881
...

And here are some examples using two decimal numbers that will add up to 881:

1.25 + 879.75 = 881
2.50 + 878.5 = 881
3.75 + 877.25 = 881
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 881?", 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 881. (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 881?" has 440 answers:

1 + 880 = 881
2 + 879 = 881
3 + 878 = 881
.
.
438 + 443 = 881
439 + 442 = 881
440 + 441 = 881

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

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