53
-113
1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735.
the answer is 18
As a product of its prime factors: 5 times 17 equals 85
108, 216, 324, 432, 540, 648 . . .
The numbers are 2 and -5
3
-5
23
They are: 3+2 = 5 and 3^2 = 9
-5 and -1
-2 and -3 -2 + (-3) = -5 -2 x -3 = 6
-8
1
-27
-3 and -3.
3