What two numbers add up to 9105?

There are infinite combinations of two numbers that add up to 9105. Here are some examples using negative numbers:

-1 + 9106 = 9105
-2 + 9107 = 9105
-3 + 9108 = 9105
...

Here are some examples using two fractions that will add up to 9105:

9105/2 + 9105/2 = 9105
18210/3 + 9105/3 = 9105
27315/4 + 9105/4 = 9105
...

And here are some examples using two decimal numbers that will add up to 9105:

1.25 + 9103.75 = 9105
2.50 + 9102.5 = 9105
3.75 + 9101.25 = 9105
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 9105?", 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 9105. (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 9105?" has 4552 answers:

1 + 9104 = 9105
2 + 9103 = 9105
3 + 9102 = 9105
.
.
4550 + 4555 = 9105
4551 + 4554 = 9105
4552 + 4553 = 9105

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 9105 by 2 and then rounded down to the nearest whole number if necessary.

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