If the sums of n terms of two APs are in ratio (2n + 3) : (3n + 2), find the ratio of their 10th terms.
Given: sums of n terms of two APs are in ratio (2n + 3) : (3n + 2)
To find: find the ratio of their 10th terms.
For the sum of n terms of two APs is given by
Or we can write it as
For 10th term put
n = 19
Therefore the ratio of the 10th term will be