There are infinitely many answers.
Start with two positie integers: 1 + 70, 2 + 69, 3 + 68, etc
Then allow negative integers: -1 + 72, -2 + 73, -3 + 74, etc
Next, introduce 1-digit decimals: 0.1 + 70.9, 0.2 + 70.8, etc
1.1 + 69.9, 1.2 + 69.8, etc
and then 2-digit decimals: 0.01 + 70.99, 0.02 + 70.98 etc
then Irrational Numbers: 1+sqrt(2) and 70-sqrt(2), 1+sqrt(3) and 70-sqrt(3) etc.
Now start again with sets of three numbers, and then 4 numbers, ...
You should have got the point by now.
They can be: 73+(-2) = 71
71 and 0.2
70 and 71
The numbers are 69, 71 and 73.
575
71
They are 70, 71 and 72.
They are are 70, 71 and 72.
84
71
71
-71