Saved Bookmarks
| 1. |
35. Find the number of terms in an A.P. 18,15,12,……., – 48 and also find the sum of allof its term |
|
Answer» Answer: no. of terms = 34sum of terms = -1071Step-by-step EXPLANATION: -48 -18 = (n-1) -3 -66/-3 = n-1 n = 34 b) Sn = 34/2 [ 2×18 + (34-1)-3] = 17 [ 36 + -99] = 17(-63) = -1701 |
|