The ratio of the 11th and 14th terms of an A.P. is 7:9, find the ratio of the 10th term to 3rd term of the series.

The ratio of 6th and 8th term of an A.P. is 7.9. Find the ratio of 9th to 13th term.

The ratio of the 7th to the 3rd terms of an A.P. is 12:5, find the ratio of the 13th to 4th term :

The ratio of the 11th term to the 18th term of an AP is 2:3 . Find the ratio of the 5th term to the 21st term and also the ratio of the sum of the first five terms to the sum of the first 21 terms.

The ratio of the 11th term to the 18th term of an AP is 2 : 3 . Find the ratio of the 5th term to the 21st term and also the ratio of the sum of the first five terms to the sum of the first 21 terms.

The ratio of 11th term to 18th term of an AP is 2:3. Find the ratio of 5th term to the 21st term, also the ratio of the sum of the first 5 terms to the sum of the first 21 terms.

The ratio of the sum of n terms of two A.P.'s is (7n-1):(3n+11), find the ratio of their 10th terms.

The ratio of 11 th term to the 18 th term of an AP is 2:3. Find the ratio of 5 th to 21 th term Also find the ratio of the sum of first 5 terms to first 21 terms.

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.

If the 9th term of an AP is zero, then the ratio of 29th term to 19th term is