Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The sum of n terms of two series in A.P. are in the ratio 5n +4 : 9n + 6. Find the ratio of their 13 th terms.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Let 
be the first terms of two A.P.s and 
are their respective common differences.
⇒ ⇒ 
⇒ ⇒ 
.................. (1)
Now the ratio of 13 th terms = 
⇒ ⇒ put 
i.e. n = 25 in equation (1)
⇒ ⇒ 
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