Find the sum of the two middle most terms of the A.P.
Solution:
Determine the A.P. whose fifth term is 19 and the difference of the eighth term from the thirteenth term is 20.
Solution:
More Solutions:
- In an A.P. (with usual notations):
- The first term of an A.P. is 5, the last term is 45 and the sum is 400.
- How many terms of the A.P. 25, 22, 19, … are needed to give the sum 116
- Find the sum of first 22 terms, of an A.P. in which d = 7 and a22 is 149.
- If the sum of the first 6 terms of an A.P. is 36.
- If an = 3 – 4n, show that a1, a2, a3, … form an A.P.