MCQOPTIONS
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MCQOPTIONS
| 1. |
The sum of a certain infinite geometric series is 20. When all the terms in the series are squared, the sum of the resulting series is 80. The sum of first three terms of the original series is: |
| A. | \(16\frac{4}{{81}}\) |
| B. | \(11\frac{1}{9}\) |
| C. | \(14\frac{2}{{27}}\) |
| D. | \(6\frac{2}{3}\) |
| Answer» D. \(6\frac{2}{3}\) | |