In the fall when the leaves change color they eventually turn brown and fall off. If the leaf is 8 feet in the air and it takes 32 seconds for it to fall from where it was to the ground. What was the average speed of the leaf falling?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?