a, b, c, d and e are integers such that 1 ≤ a < b < c < … | XAT 2010 Question Paper

XAT 2010Quantitative AbilityProgressions and SeriesMEDIUM+1 / −0.25

a, b, c, d and e are integers such that 1 ≤ a < b < c < d < e. If a, b, c, d and e are geometric progression and lcm (m , n) is the least common multiple of m and n, then the maximum value of $\frac{1}{lcm(a,b)}+\frac{1}{lcm(b,c)}+\frac{1}{lcm(c,d)}+\frac{1}{lcm(d,e)}$ is

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XAT 2010Quantitative AbilityProgressions and SeriesMEDIUM+1 / −0.25

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