2006 Cyprus MO/Lyceum/Problem 13
Problem
The sum of the digits of the number is
A.
B.
C.
D.
E. None of these
Solution
is a followed by 2006 s; when we subtract, we will get something approximately close to 2006 s. The last four digits are , and so we have 2002 s followed by . The sum of these is
See also
2006 Cyprus MO, Lyceum (Problems) | ||
Preceded by Problem 12 |
Followed by Problem 14 | |
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