jpr200012 wrote:
If k = 2n - 1, where n is an integer, what is the remainder of k^2/8?
A. 1
B. 3
C. 5
D. 7
E. Cannot be determined from the information given.
A. 1
B. 3
C. 5
D. 7
E. Cannot be determined from the information given.
......
Finally after 3lines calculation,
n(n-1)/2 + 1/8
so remainder = 1