Question 161721
1.  log5 X  = 3

According to the definition of logarithm:

X = {{{5^2}}} = 125

2.  log  25 125

We can change the base to 5(since both numbers are multiples of 5)

then  log  25 125

= log5 (125)
  ------------
  log5 (25)

   
= {{{3/2}}}