nilai dari 3log 125.5log 1/49.7log 1/81

[tex] = {}^{3} log {5}^{3} \times {}^{5} log {7}^{ - 2} \times {}^{7} log {3}^{ - 4} \\ = 3 \times {}^{3} log {5} \times ( - 2) \times {}^{5} log {7} \times ( - 4) \times {}^{7} log {3} \\ = 24 \times 1 = 24[/tex]