Jonas has 20 trading cards that he has equally among himself and three friends. you can use an array to find the numbers of cards each person gets

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?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Is a positive integer raised to a negative power always positive