Home
Class 11
MATHS
If the first two terms of harmonic progr...

If the first two terms of harmonic progression be `(1)/(2),(1)/(4)` then the harmonic mean of first four terms is

A

5

B

`(1)/(5)`

C

10

D

`(1)/(10)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

If the sum of the first n terms of an Arithmetic progression is S_n=nX+1/2n(n-1)Y where X and Y are constants, find the first term and common difference.

If the sum of first n terms of an arithemetic progression 2,5,8… is equal to sum of the first n terms of another arithmetic progression 57,59,61.. Then find the value of n

In an arithmetic progression, if the kth term is 5k +1 then the sum of first 100 terms is

If the sum of the first n terms of an Arithmetic progression is S_n=nX+1/2n(n-1)Y where X and Y are constants, find The n^th term.

If the sum of the first n terms of an Arithmetic progression is S_n=nX+1/2n(n-1)Y where X and Y are constants, find S_1 and S_2 .

The sum of the first and 21^(th) terms of an arithmetic sequence is 140 .Write the sequence, If the first term is 10.

The sum of first three terms of a geometric progression is 13/12 and their product is -1 Find geometric progression.

Sum of the first five terms of an arithmetic sequence is 45. What is the third term? Write the first two terms. Write another arithmetic sequence having the sum of the first five terms as 45.

The sum of the first and 21^(th) terms of an arithmetic sequence is 140.Calculate the sum of first 11 terms of this sequence,if the first term is 10.