If the numbers (2n-1), (3n+2) and (6n-1) are in AP, find n and hence find these numbers.

If the numbers n – 2, 4n – 1 and 5n + 2 are in A.P., find the value of n.

.If the numbers n-2,4n-1 and 5n+2 are in A.P. then find the value of n

If numbers n- 2, 4n -1 and 5n + 2 are in A.P. find the value of n and its next two terms.

If .^(n)C_(1),^(n)C_(2)and^(n)C_(3) are in A.P ., find n .

If ""^(2n)C_(1), ""^(2n)C_(2) and ""^(2n)C_(3) are in A.P., find n.

In an AP, If S_(n)=n(4n+1), then find the AP.

In an AP, If S_(n)=n(4n+1), then find the AP.

If .^(2n+1)P_(n-1): .^(2n-1)P_(n)=3:5 , find n.

If the sum of the first n terms of an A.P. is 1/2(3n^2+7n) , then find its nth term. Hence write its 20th term.