Question 453313: Creo has forgottent the last two digits on her four digit computer pass code. She cannot log on until she inputs the correct code. She remebers that all four digits are differnt from another and tthat the first 2 digits are 0 and 3. She input one possible code every two seconds . What is the maximum number of seconds it will take he to log on to her computer , assuming she tries no combination more than once
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Creo has forgottent the last two digits on her four digit computer pass code. She cannot log on until she inputs the correct code. She remebers that all four digits are differnt from another and tthat the first 2 digits are 0 and 3. She input one possible code every two seconds . What is the maximum number of seconds it will take he to log on to her computer , assuming she tries no combination more than once
-----
Code: 0,,,,3,,,,(8 choices),,,,(7 choices)
-----
Max time to try all codes is 8*7 = 56 seconds
===============================================
Cheers,
Stan H.
===============
|
|
|
