rata2 harmonis dari data 3,2,4,6,2 adalh.. a.20/7 b. 39\24 c.19/24 d.5/7 e.24/39 tolg pke cranya

[tex] = \frac{n}{ \frac{1}{n1} + \frac{1}{n2} + \frac{1}{n3} + ... } \\ = \frac{5}{ \frac{1}{3} + \frac{1}{2} + \frac{1}{4} + \frac{1}{6} + \frac{1}{2} } \\= \frac{5}{ \frac{4 + 6 + 3 + 2 + 6}{12} } \\ = \frac{5}{ \frac{21}{12} } \\ = 5 \times \frac{12}{21} \\ = \frac{20}{7} [/tex]
Jawaban : a.