need help with the following as sooon as possible 1 and 2.

1. Let A be the set of positive divisors of 15 and B = (a, b). Show your work a) What is |A x BI. b) List A x B. 2. Let A = (1, 2, 3, 4) and R be a relation on A defined by MR= a) Give R as a set. b) Draw a digraph of R