Correct Answer: Option A

Explanation

a = 1, r =\(\frac{9}{10}\)
S\(_n\)  = \(\frac{a}{1 - r}\)
S\(_n\) = \(\frac{1}{1-\frac{9}{10}}\)
= 1\(\div \frac{1}{10}\)
=1\(\times \frac{10}{1}\) = 10

• how long will it take for a 1.5A current to coat evenly a layer of copper 0.1mm thick on both... Answer this

  4 Answers   ·   Physics   ·   5 years ago
• Pulse of vein is it readily detectable? Answer this

  2 Answers   ·   Biology   ·   3 hours ago
• Metals that can be reduced from their oxides thermally? Answer this

  2 Answers   ·   Chemistry   ·   3 hours ago