Question

03
Q1 vi) Find sum to infinity of 9,8.1,7.29...

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Answer 1

Answer :

We observe that the above progression possess a common ratio. So it is a geometric progression.

Common ratio = r =

Sum of infinite GP = ,where a is the first term and r is the common ratio.

Note: We can only use the above formula if |r|<1

Clearly, a = 10 and r =

⇒ sum =