SAT Math Practice Question #27863 - SATify | SATify

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SAT Math Practice Question #27863 - SATify | SATify

#27863

average

arithmetic

easy

60 sec

The harmonic mean of a set of non-zero numbers is the reciprocal of the average of the reciprocals of the numbers. What is the harmonic mean of $2, 4, 8$ ?

A.

$\frac{7}{24}$

B.

$\frac{24}{7}$

C.

$\frac{7}{8}$

D.

$\frac{8}{7}$

E.

$\frac{12}{7}$