The question **"The sum of n terms of two ap’s is in the ratio 3n+8 and 7n+15 find the ratio of their 9th terms"** is taken from class-10 ** chapter is Arithmetic Progressions Mathematics ** English-Medium

NCERT-Book ➧ class-10 ➧ Mathematics ➧ English-Medium ➧ Arithmetic Progressions ➧ Ratio From Two Nth Term

**Question:**

The sum of n terms of two A.P.’s is in the ratio 3n + 8: 7n + 15. Find the ratio of their 9^{th} terms.

Source:www.questionsbanks.com Last updated: 2022-10-11 19:59:54

**Answer:**

Let the first term = a and common difference = d of the First A.P.

and the first term = a1 and common difference = d1 of the Second A.P.

Here we have to find ratio of 9^{th} term So n will be 2k -1 where k will be 9

Then n = 2k-1 = 2 x 9 - 1 = 17

Now putting the value n = 17 in above equation

Hence Ratio of 9th term = 59:134 Answer

1 Questions Found on same Topics.

The sum of n terms of two A.P.’s is in the ratio 3n + 8: 7n + 15. Find the ratio of their 9^{th} terms.

Hey! 8 Questions Found on same Chapter.

For what value of k, 2k-7,k+5 and 3k+2 are the consecutive terms of an A.P?

View Answer

^{th} terms.

If m times of m^{th} term of an A.P. is equal to n times of n^{th} term of same A.P. Show that (m + n)^{th} term is zero.

**Which term will be zero of A.P: 105, 98, 91, ........................ ?**

**if p ^{th }, q^{th} and r^{th} terms of an A.P. is a, b and c respectively, prove that : a(q – r) + b(r – p) + c(p – q) = 0 .**

If t_{n} = 2n+1 then find the series (A.P).

**Which term of the sequence 114, 109, 104…………is the first negative term?**

If the sum of n^{th} term of an A.P. is define as S_{n} = 3n^{2} + 4 then find the n^{th} term?

All chapters of NCERT Book as ncert solutions have exercise questions, textual questions and so many addtional questions like short answered questions, long answered questions and very long questions, here we included all types of questions answers format that need for a students and other stock holders like teachers and tutors. The sum of n terms of two ap���s is in the ratio 3n 8 and 7n 15 find the ratio of their 9th terms - Questions Bank is from NCERT Solutions class 10 English-Medium subject Mathematics chapter- Arithmetic Progressions Questions bank

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