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2 cards from this section. Quick, good the night before a test.
What is a full binary tree?
Think about how many children each node should have.
How do you calculate the number of diagonals in a triangle?
Consider what diagonal connects non-adjacent vertices.
What characterizes a full binary tree?
Consider what makes a tree 'full'.
A valid path in a grid can involve which moves?
Think about the movement constraints.
How many distinct full binary trees can you create with 5 leaves? Hint: Relate to Catalan numbers.
Remember to look up the Catalan number for n = 4.
If there are 10 sides in a convex polygon, how many diagonals exist?
Calculate each step carefully and remember the formula!
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