What two numbers add up to 9942?

There are infinite combinations of two numbers that add up to 9942. Here are some examples using negative numbers:

-1 + 9943 = 9942
-2 + 9944 = 9942
-3 + 9945 = 9942
...

Here are some examples using two fractions that will add up to 9942:

9942/2 + 9942/2 = 9942
19884/3 + 9942/3 = 9942
29826/4 + 9942/4 = 9942
...

And here are some examples using two decimal numbers that will add up to 9942:

1.25 + 9940.75 = 9942
2.50 + 9939.5 = 9942
3.75 + 9938.25 = 9942
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 9942?", 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 9942. (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 9942?" has 4971 answers:

1 + 9941 = 9942
2 + 9940 = 9942
3 + 9939 = 9942
.
.
4969 + 4973 = 9942
4970 + 4972 = 9942
4971 + 4971 = 9942

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 9942 by 2 and then rounded down to the nearest whole number if necessary.

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