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What is 0.9+0.09+0.009+ equal to?

Options

  1. A1
  2. B1.01
  3. C1.001
  4. D1.1

Correct answer

A. 1

Step-by-step solution

S= 9 10 + 9 100 + 9 1000 This is sum of infinite terms G.P. with common ratio aligned & r= 1 10 & ~S = 9 10 1- 1 10 = 9 10 9 10 =1 aligned

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