Which one of the character testing methods would you use to determine that a string contains only letters and numbers?

In the formula =SUBTOTAL(102,[PAID]), what does the 102 represent?

A) The number of rows to subtotal B) The SUM function C) The COUNT function D) The row number in which to place the subtotal

The overall control module can also be referred to as a

a) called module b) predefined module c) top down program d) driver module