If the nth term of an AP is 3+n4, then its 8th term is
The 24th term of AP is 5 more than twice its 8th term. If the 11th term of the AP is 43, find its nth term.
In an A.P., the first term is 22 and the nth term is -11. If the sum to first n terms is 66, then what is the value of n?