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Sum of 27 terms of an A.P. is 1215. common difference is 3 then find out the terms of A.P. |
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Answer» Step-by-step explanation: n=27 Sn = 1215 d=3 a=? Sn= n/2(2A + (n-1)d) 1215 = 27(a + 13*3) 1215/27 = a + 39 45 = a + 39 a= 45-39 a=6 terms of ap are, 6,9,12,15,------,78 |
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