How many 1 inch gumballs fill a pint mason jar?

A pint mason jar holds approximately 16 fluid ounces, which is equivalent to about 28.9 cubic inches. Since a 1-inch gumball has a volume of roughly 0.52 cubic inches, you can fit approximately 55 gumballs in a pint mason jar, assuming there is some space between them. However, the actual number may vary slightly due to the packing efficiency and shape of the jar.