5_ n =1+ 1 2 + 1 z^ 2 + + 1 z^ n-1 ; then the least value of n such that z-5_ n < 1 100 is
Mathematics · JEE Main · NTA Exams — Progression and Series
\(5_{n}=1+\frac{1}{2}+\frac{1}{z^{2}}+\ldots+\frac{1}{z^{n-1}}\); then the least value of n such that \(z-5_{n}<\frac{1}{100}\) is
- 8
- 7
- 9
- 10
Answer
(B) 7
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