-18
The sum is 2+14 = 16
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
in addition the answer is sum but i forgot what is it for multiplacation?
-6
the sum of 2 plus 2 is 4/2+2=44
33 + 25 + 16 = 74
24
-8.
The sum of 6 plus 2 is 8.
4 plus 10 plus 16 plus 70 equals 100. To find the sum of this series, simply add all the numbers together.
Sum = Addition 2 + 2 = 4
Yes. Sum of powers of 2 from 20 to 2n is (2(n + 1) - 1) or (2 x 2n) -1 So sum of 1 + 2...+ 4096 is 8192 - 1 ie 8191.