The sum of 18th term of an a.p is 549 .... d = 3
(18/2)(2a + 17(3)) = 549
2a + 51 = 61
a = 5
term(56) = a + 55d = ....
sum(32) = 16(2a + 31d) = ....
The sum of 18th term of an a.p is 549 given that the common difference is 3 find the 56th term and also the sum of the its 32 term
2 answers
1701648