If the array:
6, 2, 7, 13, 5, 4
is added to a stack, in the order given, which number will be the first number to be removed from the stack?

?Businesses started adopting Internet Explorer more than 20 years ago simply to view webpages. Today, Microsoft Edge has a different purpose: __________. 

Fill in the blank(s) with the appropriate word(s).

If an auditor suspected an "unusual" relationship between a purchasing agent and certain suppliers, how could "drill-down" be used to collect data?

What will be an ideal response?