1 + 14, 2 + 13, 3 + 12, ...
1.1 + 13.9, 1.2 + 13.8, 1.3 + 13.7, ....
1.01 + 13.99, 1.02 + 13.98, 1.03 + 13.97, ...
And then there are sets of 3 numbers, 4 numbers, and so on.
30
The given numbers of 15 and 35 are not prime numbers but they add up to 50
15+15+1=31
Impossible.
15
The two numbers that multiply to -15 and add up to 2 are 5 and -3. When you multiply 5 and -3, you get -15, and when you add them together, you get 2.
The numbers are 15, 16 and 17.
You can't make 15 with even numbera
31
23
45
The numbers are 11, 13 and 15.