The the value of log81 3 is ¼. The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query about and it will be able to help you.
A property logarythms have, is that \(Log_{b}\) a = \(\frac{Ln a}{Ln b}\), so \(Log_{81}\) 3 = \(\frac{Ln 3}{Ln 81}\), numbers we can find out with the help of a calculator.
In this case the answer is 0'25, so the solution is B, 1/4.
