119
There are many possible answers comprising sets of 2 or more numbers.
For example, {1, 1, 1, 3, 3, 11}, {33, 3, and 16 lots of -1}
The only pair of number is 9 and 11.
99
-97
99*99=9801
Do you mean:"What three consecutive numbers add up to 99?" If you do, then the numbers are 32, 33, 34.
99
119
99
99
99
-97
-97
20%=.2 Multiply 99 by .2 99*.2= 19.8
The prime factorization of 99 is: 3 * 3 * 11 = 99
396
There are infinite numbers, but 11* 9 is fine.
99*99=9801
198