Grade 11Algebra
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.
1 Answer
Arun Kumar
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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