Question 1057963
If the first terms of the sequence are 128,-64,32--16...then the pattern is n,-n/2,n/4....so the first ten terms are: 128, -64, 32, -16, 8, -4, 2, -1, 1/2, -1/4. Adding them up, we get 85.25. &#9786;&#9786;&#9786;&#9786;