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Sam writes down the numbers 1, 2, 3, ..., 99

 

(a) How many digits did Sam write, in total?

(b) Sam chooses one of the digits written down, at random.  What is the probability that Sam chooses a 0?

(c) What is the sum of all the digits that Sam wrote down?

 Feb 18, 2023
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for problem a it would be 99 digits

for problem b it would be 1 over 99 as a fraction

for problem c the sum would be 99

 Feb 18, 2023

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