2017 AMC 12A Problems/Problem 18
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Problem
Let equal the sum of the digits of positive integer
. For example,
. For a particular positive integer
,
. Which of the following could be the value of
?
Solution
Note that , so
. So, since
, we have that
. The only one of the answer choices
is
.
See Also
2017 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 17 |
Followed by Problem 19 |
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All AMC 12 Problems and Solutions |