Find S15 of the series : 2 + 5 + 10 + 17 + 26 + .....
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Step-by-step explanation:
Given:2 + 5 + 10 + 17 + 26 + .....
To find:S15
Solution:
To find the sum of first 15 terms of given series,first check the pattern of series
So,
general term of this series is
To find the sum of n terms of the series
Sum of 15 terms
Sum of 15 terms of the series is 1255.
Hope it helps you.
To learn more on brainly:
1)find the nth term of the 2,4,9,16,25
https://brainly.in/question/7706998
2)find the sum of the following series 1+4+9+16+...+225
https://brainly.in/question/9797431
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