1 Divide 25 by the nearest power of 10. To calculate log 25. That is the number of times number 10 should be multiplied by itself to obtain n.
Log 10 n 10 x n Where x is the log 10 of n.
To calculate log 25. Log b x y y log b x Logarithm base switch rule. Hence lets assign the values as below. Calculating log and antilog values using scientific calculator.