Question

The sum of n terms of two A.P. are in ratio (2n+3):(6n+5) then the ratio of their 13th terms is ?

Answer 1

Step-by-step explanation:

Let nth term of 1st A.P. = (2n+3)x Its 13th term will= (2×13+3)x =29x Let nth term kf 2nd A.P.= (6n+3)x Its 13th term = (6×13+3)x =81x Ratio of their 13th terms: 29x/81x =29/81