What is the total number of digits required in numbering the pages of a book, which has 105 pages?

answer:

9 one digit

178 two digit

18 three digit

total=9+178+18=205 digits

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

b segment jm is correct i think