How many different combinations of 6 objects are there taken 3 at a time

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

What two criteria are needed for triangles to be similar

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?