What is the relationship and the measure of the missing angle?

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?

Can someone me i’m confused. will give brainliest and a whole bunch of points

Change negative exponents to positive, then solve