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CBSE Class 10 Answered

find the sum of 31 terms of an A.P. whose nth term is given by 3 + 2 /3 n.
Asked by nisha_vini29 | 21 Sep, 2015, 02:37: PM
answered-by-expert Expert Answer

 

31 s t space t e r m space o f space t h e space A. P. space i s space o b t a i n e d space b y space s u b s t i t u t i n g space n equals 31 space i n space t h e space n t h space t e r m. 3 plus 2 over 3 cross times 31 equals 3 plus 62 over 3 equals 71 over 3

Answered by | 21 Sep, 2015, 06:16: PM

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