If the sum of n terms of two arithmetic series are in the ratio. ,- (2 + 3n) : (3 + 2n). Find the ratio of their 7th term.

If the sum of n terms of two arithmetic series are in the ratio. ,- (6n + 1) : (4n + 21). Find the ratio of their 8th term.

The sum of n terms of two arithmetic series are in the ratio of (7n + 1)/(4n + 27) . Find the ratio of their 12th terms.

The sums of n terms of two arithmetic progresssions are in the ratio (7n+1):(4n+17). Find the ratio of their mth terms.

The sums of n terms of two arithmetic progressions are in the ratio 5n+ 4 : 9n + 6 . Find the ratio of their 18th terms.

The sum of n terms of arithmetic progressions are in the ratio (3n+ 8): (7n+ 15). Find the ratio of their 12th terms.

If the sum of n terms of two A.P.s are in the ratio 7n + 1 : 4n + 27. Find the ratio of their 11^(th) terms.

The sums of n terms of two AP's are in the ratio (3n-13):(5n+21). Find the ratio of their 24th terms.

If the ratio of sum of m terms of an A.P. to the sum of n terms is (2m + 1) : (3n +1), find the ratio of 7th to 10th term

Find the sum of n terms of the series whose nth term is : 2^(n-1)-1 .