plz tell the full question well i hope this will help.
The key word to note is 'product'. A product is the answer to a multiplication operation.
The product of 3 and 4 means 3×4=12
12 is the product.
In this question we are working with algebra, but it means the same.
The product of pandq means p×q=pq
The product is pq. This is an algebraic term which cannot be simplified further and cannot be evaluated unless you know the values for pandq