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Class 11
Maths :-NCERT Solutions - Sequences And Series.

Page No 200:
Question 21:
Find the sum of the following series up to n terms:
(i) 5 + 55 + 555 + … (ii) .6 +.66 +. 666 +…


Answer:


(i) 5 + 55 + 555 + …
Let Sn = 5 + 55 + 555 + ….. to n terms

(ii) .6 +.66 +. 666 +…
Let Sn = 06. + 0.66 + 0.666 + … to n terms


NCERT Maths Class 11

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