2019 AMC 10A Problems/Problem 2
Problem
What is the hundreds digit of
Solution
The last three digit of for all
is
, because there are at least three 2s and three 5s in its prime factorization. Because
, The answer is
.
What is the hundreds digit of
The last three digit of for all
is
, because there are at least three 2s and three 5s in its prime factorization. Because
, The answer is
.
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