1 x 15, 3 x 5, 5 x 3, 15 x 1
29950795999/pi
15
31
They are about: 0.53112887 and -7.53112887
110 and -95
17
-127
22
if you multiply 15 and 9 you get 145
You can multiply 5 by 15 to get 75.
-17
47
-71
141
3 & 55, 5 & 33, 11 & 15
There is no answer to this. The factors of 15 are 1, 3, 5 and 15. The only numbers that add up to four are 1+3, 4+0 and 2+2.
There is no answer to this. The factors of 15 are 1, 3, 5 and 15. The only numbers that add up to four are 1+3, 4+0 and 2+2.