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Verified answer
Jawab7 (1/6 + 1/12 + 1/20 + ...+ 1/4830)
7 [1/(2.3) + 1/(3.4) + 1/(4.5 ) +...+ 1/(69.70)]
7 [ 1/2 - 1/3 + 1/3 - 1/4 + ...+ 1/69 - 1/70]
7 [1/2 - 1/70]
7 [ 17/35]
= 17/5