Here is an example which leads me to believe that there are approximately 50 items in this picture. To be on the safe side, I will give a range as my answer and say that I think there are between 40 and 60 items.
PICTURE
Can you use a similar approach? Can you use a different approach?
Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?