The answer to exercise marked [BB] can be found in the Back of the Book.
(a) Suppose the natural number N is (an−1…a0)b (in base b). Prove that n − 1 = [logb N] (and hence that N has 1 + [logb N] digits in base b).
(b) How many digits does 7254 have in its base 10 representation?
(c) How many digits does the number 319566 have in its base 10 representation?
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