Question 1057963: Find the sum of the first ten terms of the sequence 128, -64, 32, -16, ….
Answer by jorel555(1290)   (Show Source):
You can put this solution on YOUR website! 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. ☺☺☺☺
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