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How Many Terms Are There in the Series: 0.5, 053, 0.56, ......, 1.1? - ICSE Class 10 - Mathematics

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Question

How many terms are there in the series:

0.5, 0.53, 0.56, ......, 1.1?

Solution

The given series is 0.5, 0.53, 0.56, ...., 1.1

0.53 - 0.5 = 0.03, 0.56 - 0.53 = 0.03 etc.

Thus the given series is an A.P with the first term a  = 0.5 and common difference d = 0.03.

Last term  = l= 1.1

0.5 + (n - 1)(0.03) = 1.1

`=> (n -1) xx 0.03 = 0.6`

=> n - 1 = 20

=> n = 21

Thus there are  21 terms in the given series.

  Is there an error in this question or solution?
Solution How Many Terms Are There in the Series: 0.5, 053, 0.56, ......, 1.1? Concept: Arithmetic Progression - Finding Sum of Their First ‘N’ Terms..
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