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I will answer this question afterwards value will be 209
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Answer:
5/11.
Step-by-step explanation:
S = 1/1.3 + 1/3.5 + 1/5.7 + 1/7.9 + 1/9.11
S = 1/2 [ (1-1/3)+(1/3-1/5)+(1/5-1/7)+(1/7-1/9)+(1/9-1/11)]
All the terms excluding 1 and -1/11 will be cancelled.
S = 1/2[1-(1/11)]
S = 1/2 * 10/11 = 5/11...
Its Sum Formula Is (Sₙ = n/2n+1).
For n=5 . S₅ = 5 / 11.
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RiyaParikh:
how 1/2 came, I don't understand
i tell
you can write 1/3 as 1/2 * 2/3
from this process take 1/2 common from all terms
riya which class are u from
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