2006 Canadian MO Problems/Problem 1
Problem
Let be the number of ways distributing
candies to
children so that each child receives at most two candies. For example,
,
, and
. Evaluate
.
Solution
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See also
2006 Canadian MO (Problems) | ||
Preceded by First question |
1 • 2 • 3 • 4 • 5 | Followed by Problem 2 |