0
Wiki User
10
33
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
The sum of 8 and 2/3 is 8 2/3
-6
The sum of 1/8 and 3/8 is 1/2
12/10+2=12
495
The sum of 10 plus 8 is 18.
44
-2
The sum of 2 1/2 + 3/8 is 2 7/8
-8 minus 10 -8 plus 10