If between 1 and 1/31 there are n H.M's ...

If between 1 and 1/31 there are n H.M's and ratio of 7th and `(n-1)^th` harmonic means is 9:5, then values of n is

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

PROBABILITY
PATHFINDER|Exercise QUESTION BANK|41 Videos
QUADRATIC EQUATION
PATHFINDER|Exercise QUESTION BANK|19 Videos

Similar Questions

Explore conceptually related problems

Between 1 and 31, m numbers have been inserted in such a way that the resulting sequence is an A. P. and the ratio of 7^(th) and (m - 1)^(th) numbers is 5 : 9. Find the value of m.

Between 1 and 31, m numbers have been inserted in such a way that the resulting sequence is an A. P. and the ratio of 7^(t h) and (m-1)^(t h) numbers is 5 : 9. Find the value of m.

Difference between nth and (n+1)th Bohr's radius of H atom is equal to its (n-1)th Bohr's radius.The value of n is

Find the harmonic mean of 1, 1/2, 1/3, 1/n.

If in the expansion of (a-2b)^(n) , the sum of 5^(th) and 6^(th) terms is 0, then the values of a/b is

In the expansion of (1+x)^n , 7th and 8th terms are equal. Find the value of ( 7/x +6)^2 .

Find the harmonic mean of 1, 1/2. 1/3,………..1/n

If "^(2n+1)P_(n-1):^(2n-1)P_n=3:5, then find the value of n .

If n is even number, then median is the mean of (n/2) th and (n/2 - 1) th observation.

If p be the first of n arithmetic means between two numbers and q be the first of n harmonic means between the same two numbers , then prove that the value of q can not lie between p and ((n+1)/(n-1))^2p .

PATHFINDER-PROGRESSION AND SERIES -QUESTION BANK

If H1,H2,H3,.......Hn be n harmonic means between a and b then (H1+a)...
10:13
|
If a,b,c are in AP and a^2,b^2,c^2 are in HP, then
03:49
|
If between 1 and 1/31 there are n H.M's and ratio of 7th and (n-1)^th ...
05:30
|
(a^(n+1)+b^(n+1))/(a^n+b^n) is AM/GM/HM, between a and b if n is equal...
11:04
|
Sum of infinite terms of series 3+5. 1/4+7. 1/4^2+..... is
03:14
|
The value of x for which 1/(1+sqrtx),1/(1-x),1/(1-sqrtx) are in AP li...
03:06
|
If the non-zero numbers a,b,c are in AP and tan^-1a,tan^-1b,tan^-1c ar...
02:30
|
If a,b,c,d are distinct positive numbers in AP, then
04:10
|
If sum(r=1)^nr(r+1)(2r+3)=an^4+bn^3+cn^2+dn+e, then
05:46
|
The pth term Tp of HP is q(p+q) and qth term Tq is p(p+q) when pgt1,qg...
08:47
|
For a positive integer n let a(n)=1+1/2+1/3+1/4+.......+1/((2^n)-1) th...
03:04
|
A geometric progression of real number is such that the sum of its fir...
08:49
|
If the first and the (2n-1)^th term of an A.P,G.P anf H.P are equal an...
03:23
|
If a,b,c be in H.P prove that (1/a+1/b-1/c)(1/b+1/c-1/a)=4/(ac)-3/b^2
07:19
|
Which one of the following statements is correct ?
02:52
|
Let sinalpha,cosalpha, be the roots of the equation x^2-bx+c=0. Then w...
02:54
|
Which one of the following statements is correct ?
02:52
|
The sum V1+V2+.....Vn is
03:36
|
Tr is always
04:25
|
Which one of the following statements is correct ?
02:52
|

Home

Profile