If the terms of an AP are chosen at regular intervals ; then they form an AP.

If 7th term of an A.P. is 9 and 9th term of the A.P. is 7, then 20th term of the A.P. is

If 6 times of 6th term of an A.P. is equal to 7 times term, then the 13th term of the A.P. is

If the 10^(th) term of an AP is 0 , then find the ratio of the 27^(th) term and the 15^(th) term of the AP.

Suppose that the first and the 5^(th) terms of an A.P. are-14 and 2 respectively If the sum of the terms of the A.P is 40, find the number of terms in the A.P.

If 20 th term of an AP is and 40 th term of the 40 same AP is then the sum of 800 terms is

If the sum of m terms of an A.P, is equal to the sum of n terms of the A.P ., then the sum of (m + n) terms is

If the 5th term and the 14 th term of an AP are 35 and 8 respectively, then find the 20 th term of the AP.