Jawabanmu

2014-09-12T13:26:34+07:00
A. log 0,6 = log 3 / log 5 = 0,477 / 0,699 = 0,682
B. log 20 = log 2 * log 2 * log 5 = 0,633
C. log 90 = log 2 * log 3 * log 3 * log 5 = 0,047
ane lupa caranya, tapi kalo g salah gitu deh...