We know that : log 65 = 1.812 or: log (10) 65 = 1.812 ( logarithm with the base of 10 )
log (1000) 65 = log ( 10^3 ) 65 = 1/3 * log (10) 65 =
/ this is because the logarithmic rule is: log(a^b) x = 1/b * log (a) x /
= 1/3 * 1.812 = 0.604
Answer: c. 0.604