"The purpose of quality assurance is to prevent mistakes or defects during the manufacturing process of a product. Employers are looking for someone who pays attention to detail and knows how to troubleshoot issues with a product. During an interview, you may be presented with one of the company's products and asked to explain how you would go about testing and improving it."
Something similar to: You have 7 baskets and 15 eggs. How many ways can you put the eggs in the baskets? Eggs must be grouped in odd numbers.