What two numbers add up to 1139?

There are infinite combinations of two numbers that add up to 1139. Here are some examples using negative numbers:

-1 + 1140 = 1139
-2 + 1141 = 1139
-3 + 1142 = 1139
...

Here are some examples using two fractions that will add up to 1139:

1139/2 + 1139/2 = 1139
2278/3 + 1139/3 = 1139
3417/4 + 1139/4 = 1139
...

And here are some examples using two decimal numbers that will add up to 1139:

1.25 + 1137.75 = 1139
2.50 + 1136.5 = 1139
3.75 + 1135.25 = 1139
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 1139?", 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 1139. (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 1139?" has 569 answers:

1 + 1138 = 1139
2 + 1137 = 1139
3 + 1136 = 1139
.
.
567 + 572 = 1139
568 + 571 = 1139
569 + 570 = 1139

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 1139 by 2 and then rounded down to the nearest whole number if necessary.

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