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find the sum of the series 1+3+4+8+7+13+10+18+........... to 23 terms.

find the sum of the series  1+3+4+8+7+13+10+18+........... to 23 terms.

Grade:11

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
9 years ago
Hello
if you see its merged form of two series.
1,4,7,10,13,16...till 12 terms=6(2+11*3)
3,8,13...till 11 terms=11(3+10*5)/2
Now its easy to find.

Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty

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