Sponsor Area
Permutations And Combinations
Question
The sums of first n terms of two A.P.’s are in the ratio of 14 – 4n : 3n + 5. Find the ratio of their 8th terms.
Solution
Let 
and 
respectively be the first term and common difference of two A.P.'s
or 
or 
or 
Taking 
or n - 1 = 14 or n = 15
∴ 
Some More Questions From Permutations and Combinations Chapter
Sponsor Area
Mock Test Series
Mock Test Series