2000
Mathematics
67ca00ce0c643c71d77dee1f
Evaluate (1/2 - 1/4 - 1/8 - 1/16 + ...) - 1
A.
2/3
B.
zero
C.
-2/3
D.
-1
Correct Answer: -2/3
Explanation
S = a/(1+r), where a = 1/2, r = 1/2. S = 1/2 3/2 = 1/2 x 3/2 = 1/3. 1/3 - 1 = -2/3
S = a/(1+r), where a = 1/2, r = 1/2. S = 1/2 3/2 = 1/2 x 3/2 = 1/3. 1/3 - 1 = -2/3THIS WEEK's
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