medium · GMAT Quant
A communication link suffers cumulative packet error rates expressed as e_k = dfrac2k(k+2) for channels k = 1, 2, dots, 12.
What is the total error rate E = sum_k=1^12 e_k?
- dfrac12391
- dfrac123182
- dfrac27182
- dfrac1112
- dfrac91123
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