Pairs of positive integer factors of 90 are:
1 x 90 = 90
2 x 45 = 90
3 x 30 = 90
5 x 18 = 90
6 x 15 = 90
9 x 10 = 90
And their reverses. Therefore, the positive integer factors of 90 are: 1 2 3 5 6 9 10 15 18 30 45 90.
These are all the numbers that you could add up to get 90
5 x 18 = 90. 6 x 15 = 90. 9 x 10 = 90
45 and 2.
90
-117
270
The numbers are 10 and -9
-117
It is not possible to multiply two prime numbers and get 90. You can add 43 and 47.
360
111
-9 and 10
-30 and 3
12 10 10 10