The sum of the series 1-2-1-1-2-3-1-120-121 is-

The correct option is A 10The first term sum of the series is √(2) 1, for 2 terms we have the sum as √(3) 1 and so on. For the given series of 120 terms th ...

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The sum of th...

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The sum of the series $\frac{1}{(\sqrt{2} + \sqrt{1})} + \frac{1}{(\sqrt{2} + \sqrt{3})} + . . . . . . + \frac{1}{(\sqrt{120} + \sqrt{121})}$ is:

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Solution

The correct option is A 10
The first term sum of the series is $\sqrt{2} - 1$ , for 2 terms we have the sum as $\sqrt{3} - 1$ and so on. For the given series of 120 terms the sum would be $\sqrt{121} - 1 = 10$ .

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The sum of the series 1(√2+√1)+1(√2+√3)+......+1(√120+√121) is:

The correct option is A 10The first term sum of the series is √2−1, for 2 terms we have the sum as √3−1 and so on. For the given series of 120 terms the sum would be √121−1=10.

The sum of the series $\frac{1}{(\sqrt{2} + \sqrt{1})} + \frac{1}{(\sqrt{2} + \sqrt{3})} + . . . . . . + \frac{1}{(\sqrt{120} + \sqrt{121})}$ is:

The correct option is A 10
The first term sum of the series is $\sqrt{2} - 1$ , for 2 terms we have the sum as $\sqrt{3} - 1$ and so on. For the given series of 120 terms the sum would be $\sqrt{121} - 1 = 10$ .