Ask a New Question

the sum of 11 term of an A.p is 891 find the 28 and 45 terms if the common difference is 15

2 answers

the sum of 11 term of an A.p is 891 find the 28 and 45 terms if the common difference is 15

Yeah -- we got it the first time

11/2 (2a+10*15) = 891
a = 6
a28 = a + 27d
a45 = a + 44d
So just plug and chug

Ask a New Question or answer this question.

Similar Questions

1) The sum of last three terms of GP having n terms is 1024 time the sume of first 3 terms of GP. If 3rd term is 5. Find the
1. 1 answer
1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the
1. 4 answers
The third term of a G.P is 24 and the sum of the first two terms is 288. If all the terms are positive,finda)the first term and
1. 1 answer
The 14th term of an arithmetic progression AP is 96 while the 25th term is 173.find theA: 19th terms B:sum of 13th and 53 terms
1. 1 answer

more similar questions