Question

If 3, X , 7 are in hp then X =?

Answer 1

Answer:

A=3

b=7

d=b_a/2=7_3/2=4/2=2

x= a+d=3+2=5

Answer 2

Concept:

Using the concept of Harmonic Progression.

Given:

3,X,7 are in HP.

Find:

Value of x

Solution:

As 3, X, 7 are in HP

∴ A=3 & B=7

∴  $d=(b-a)/2=(7-3)/2=4/2=2$

∴ x= a + d = 3 + 2 = 5

Thus, the value of x is 5

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