3.3 Assume that Personal Identification Numbers (PINs) are formed by nine-digit com- binations of numbers 0 to 9. Assume that an adversary is able to attempt three PINs per second. a. Assuming no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct PIN? b. Assuming feedback to the adversary flagging an error as each incorrect digit is entered, what is the expected time to discover the correct PIN?

The file sales data. xlsx contains monthly sales amounts for 40 sales regions. write a sub that uses a for loop to color the interior of every other row (rows 3, 5, etc.) gray. color only the data area, columns a to m. (check the file colors in excel. xlsm to find a nice color of gray.)

How do you make a lenny face? plz, brailiest to who can answer first.

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.