Question

30 If the harmonic mean of the
two numbers X1 and X2 is 6.4 if
X2=16, then X1 is:​

Answer 1

Step-by-step explanation:

We know the relation between Arithmetic Mean, Harmonic Mean, and Geometric Mean of Two Numbers:

A.M. × H.M. = (G.M.)

2

⇒16× H.M. =8

2

⇒16× H.M. =64

⇒ H.M. =4