How many triangles are there in the diagram above?
In the single-elimination NCAA Tournament, 64 teams compete in 6 bracketed rounds. How many games are there in total?
How many 4 -digit positive integers have 2 or more zeroes?
How many parallelograms are formed when a set of 5 parallel lines intersects a set of 4 parallel lines?
Details and Assumptions
How many triangles are there in the above image?