Abcd is a kite x = ?

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

With: label the vertices and all the elements needed. find x

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?