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The sum of first 20 terms of the sequenc...

The sum of first 20 terms of the sequence 0.7, 0.77, 0.777...... is

A

`(7)/(81)(179+10^(-20))`

B

`(7)/(9)(99+10^(-20))`.

C

`(7)/(81)(179-10^(-20))`

D

`(7)/(9)(99-10^(-20))`.

Text Solution

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The correct Answer is:
A
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MOTION-SEQUENCE & SERIES -Exercise -4 Level -I Previous Year /JEE Main
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  7. If 100 times the 100^(t h) term of an AP with non zero common diffe...

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  16. If the sum of the first ten terms of the series (1 3/5)^2+(2 2/5)^2+(3...

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  17. For any three positive real numbers a, b and c, 9(25a^2+b^2)+25(c^2-3a...

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