Question

if log2=0.3010 and log 3=0.4771 find the value of log 25

Answer 1

Log25 = log5 + log5
= log(10/2) + log(10/2)
= (log10-log2) + (log10-log2)
= (1-0.3010) + (1-0.3010)
= 0.6990 + 0.6990
= 1.3980

Answer 2

"From the details details, the value of log2 and log 3 is given below. It is 0.3010 and 0.4771 respectively.  Then the value of log 25 is calculated below.

Log25 = log5 + log5

= log(10/2) + log(10/2)

= (log10-log2) + (log10-log2)

= (1-0.3010) + (1-0.3010)

= 0.6990 + 0.6990

The value of log 25 is 1.3980.

"