The series is (d)
What is series?
A series is the cumulative sum of a given sequence of terms.
Given:
2.5 + 2.5(1.2) + 2.5(1.2)2 + ⋯ + 2.5(1.2)87
If we look at the power it is always one less the term i.e., for first term the value of k=0.
So, the series in the form of summation can be written as
[tex]^{88}\sum_{k=1}[/tex] 2.5 (1.2)^(k-1)
Learn more about series here:
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